diff --git a/wp-content/themes/twentyeleven/content-aside.php b/wp-content/themes/twentyeleven/content-aside.php
index fc88425424..03b3ef31a5 100644
--- a/wp-content/themes/twentyeleven/content-aside.php
+++ b/wp-content/themes/twentyeleven/content-aside.php
@@ -40,7 +40,7 @@
 
 		<footer class="entry-meta">
 			<?php
-				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 					get_permalink(),
 					get_the_date( 'c' ),
 					get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content-featured.php b/wp-content/themes/twentyeleven/content-featured.php
index fcde230c2a..a09020be4c 100644
--- a/wp-content/themes/twentyeleven/content-featured.php
+++ b/wp-content/themes/twentyeleven/content-featured.php
@@ -15,7 +15,7 @@ global $feature_class;
 
 		<div class="entry-meta">
 			<?php
-				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 					get_permalink(),
 					get_the_date( 'c' ),
 					get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content-gallery.php b/wp-content/themes/twentyeleven/content-gallery.php
index 0576a4471c..a190a67d9a 100644
--- a/wp-content/themes/twentyeleven/content-gallery.php
+++ b/wp-content/themes/twentyeleven/content-gallery.php
@@ -19,7 +19,7 @@
 
 		<div class="entry-meta">
 			<?php
-				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 					get_permalink(),
 					get_the_date( 'c' ),
 					get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content-image.php b/wp-content/themes/twentyeleven/content-image.php
index b957271d52..c3ef9443a0 100644
--- a/wp-content/themes/twentyeleven/content-image.php
+++ b/wp-content/themes/twentyeleven/content-image.php
@@ -32,7 +32,7 @@
 			<?php if ( 'post' == $post->post_type ) : // Hide category and tag text for pages on Search ?>
 			<div class="entry-meta">
 				<?php
-					printf( __( '<a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+					printf( __( '<a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 						get_permalink(),
 						get_the_date( 'c' ),
 						get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content-link.php b/wp-content/themes/twentyeleven/content-link.php
index 25c076a14a..17932ad30b 100644
--- a/wp-content/themes/twentyeleven/content-link.php
+++ b/wp-content/themes/twentyeleven/content-link.php
@@ -40,7 +40,7 @@
 
 		<footer class="entry-meta">
 			<?php
-				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 					get_permalink(),
 					get_the_date( 'c' ),
 					get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content-quote.php b/wp-content/themes/twentyeleven/content-quote.php
index 09d06e1b03..d2808260a7 100644
--- a/wp-content/themes/twentyeleven/content-quote.php
+++ b/wp-content/themes/twentyeleven/content-quote.php
@@ -18,7 +18,7 @@
 			<?php if ( 'post' == $post->post_type ) : ?>
 			<div class="entry-meta">
 				<?php
-					printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+					printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 						get_permalink(),
 						get_the_date( 'c' ),
 						get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content-single.php b/wp-content/themes/twentyeleven/content-single.php
index 7900c74347..e40c20cb76 100644
--- a/wp-content/themes/twentyeleven/content-single.php
+++ b/wp-content/themes/twentyeleven/content-single.php
@@ -14,7 +14,7 @@
 
 		<div class="entry-meta">
 			<?php
-				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 					get_permalink(),
 					get_the_date( 'c' ),
 					get_the_date(),
@@ -62,7 +62,7 @@
 				<h2><?php printf( esc_attr__( 'About %s', 'twentyeleven' ), get_the_author() ); ?></h2>
 				<?php the_author_meta( 'description' ); ?>
 				<div id="author-link">
-					<a href="<?php echo get_author_posts_url( get_the_author_meta( 'ID' ) ); ?>">
+					<a href="<?php echo get_author_posts_url( get_the_author_meta( 'ID' ) ); ?>" rel="author">
 						<?php printf( __( 'View all posts by %s <span class="meta-nav">&rarr;</span>', 'twentyeleven' ), get_the_author() ); ?>
 					</a>
 				</div><!-- #author-link	-->
diff --git a/wp-content/themes/twentyeleven/content-status.php b/wp-content/themes/twentyeleven/content-status.php
index dfd6918704..8926ebdda8 100644
--- a/wp-content/themes/twentyeleven/content-status.php
+++ b/wp-content/themes/twentyeleven/content-status.php
@@ -41,7 +41,7 @@
 
 		<footer class="entry-meta">
 			<?php
-				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+				printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 					get_permalink(),
 					get_the_date( 'c' ),
 					get_the_date(),
diff --git a/wp-content/themes/twentyeleven/content.php b/wp-content/themes/twentyeleven/content.php
index 1fee3a9456..0b5e7c38b8 100644
--- a/wp-content/themes/twentyeleven/content.php
+++ b/wp-content/themes/twentyeleven/content.php
@@ -22,7 +22,7 @@
 			<?php if ( 'post' == $post->post_type ) : ?>
 			<div class="entry-meta">
 				<?php
-					printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s">%6$s</a></span>', 'twentyeleven' ),
+					printf( __( '<span class="sep">Posted on </span><a href="%1$s" rel="bookmark"><time class="entry-date" datetime="%2$s" pubdate>%3$s</time></a> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%4$s" title="%5$s" rel="author">%6$s</a></span>', 'twentyeleven' ),
 						get_permalink(),
 						get_the_date( 'c' ),
 						get_the_date(),
diff --git a/wp-content/themes/twentyten/loop-attachment.php b/wp-content/themes/twentyten/loop-attachment.php
index 20794fba09..7368200ab2 100644
--- a/wp-content/themes/twentyten/loop-attachment.php
+++ b/wp-content/themes/twentyten/loop-attachment.php
@@ -31,7 +31,7 @@
 						<?php
 							printf( __( '<span class="%1$s">By</span> %2$s', 'twentyten' ),
 								'meta-prep meta-prep-author',
-								sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s">%3$s</a></span>',
+								sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
 									get_author_posts_url( get_the_author_meta( 'ID' ) ),
 									sprintf( esc_attr__( 'View all posts by %s', 'twentyten' ), get_the_author() ),
 									get_the_author()
diff --git a/wp-content/themes/twentyten/loop-single.php b/wp-content/themes/twentyten/loop-single.php
index 50860e24fe..c12d47b2c1 100644
--- a/wp-content/themes/twentyten/loop-single.php
+++ b/wp-content/themes/twentyten/loop-single.php
@@ -43,7 +43,7 @@
 							<h2><?php printf( esc_attr__( 'About %s', 'twentyten' ), get_the_author() ); ?></h2>
 							<?php the_author_meta( 'description' ); ?>
 							<div id="author-link">
-								<a href="<?php echo get_author_posts_url( get_the_author_meta( 'ID' ) ); ?>">
+								<a href="<?php echo get_author_posts_url( get_the_author_meta( 'ID' ) ); ?>" rel="author">
 									<?php printf( __( 'View all posts by %s <span class="meta-nav">&rarr;</span>', 'twentyten' ), get_the_author() ); ?>
 								</a>
 							</div><!-- #author-link	-->
diff --git a/wp-includes/author-template.php b/wp-includes/author-template.php
index f792a088b0..089780f0a9 100644
--- a/wp-includes/author-template.php
+++ b/wp-includes/author-template.php
@@ -206,7 +206,7 @@ function the_author_posts_link($deprecated = '') {
 	if ( !is_object( $authordata ) )
 		return false;
 	$link = sprintf(
-		'<a href="%1$s" title="%2$s">%3$s</a>',
+		'<a href="%1$s" title="%2$s" rel="author">%3$s</a>',
 		get_author_posts_url( $authordata->ID, $authordata->user_nicename ),
 		esc_attr( sprintf( __( 'Posts by %s' ), get_the_author() ) ),
 		get_the_author()