A modification to P2 to modify the login redirect, preferring the blog front page to the admin page.

Index: functions.php
===================================================================
--- functions.php	(revision 1964)
+++ functions.php	(working copy)
@@ -2,6 +2,7 @@
 $content_width = '691';
 
 add_filter( 'the_content', 'make_clickable' );
+add_filter( 'login_redirect', 'login_redirect_homepage' );
 
 add_action( 'wp_ajax_prologue_ajax_tag_search', 'prologue_ajax_tag_search' ); //Tag suggestion
 add_action( 'wp_ajax_prologue_load_post', 'prologue_load_post' ); // Load posts for inline editing
@@ -1333,3 +1334,7 @@
 if ( defined('IS_WPCOM') && IS_WPCOM ) {
     add_filter( 'prologue_poweredby_link', returner('<a href="http://wordpress.com/">'.__('Blog at WordPress.com', 'p2').'.</a>') );
 }
+
+function login_redirect_homepage( $redirect_to ) {
+    return $redirect_to == admin_url() ? get_bloginfo('url') : $redirect_to;
+}