Does WordPress send data about your blog to WordPress.org or Automattic?
Yes, it does. See Ticket #16778 wordpress is leaking user/blog information during wp_version_check(). All the details are in /wp-includes/update.php: if ( is_multisite( ) ) { $user_count = get_user_count( ); $num_blogs = get_blog_count( ); $wp_install = network_site_url( ); $multisite_enabled = 1; } else { $user_count = count_users( ); $user_count = $user_count[‘total_users’]; $multisite_enabled = 0; $num_blogs = … Read more