Google has made a great tool for webmasters to find out what Google thinks of your site. Including errors , not found, timeouts and more. In order to get the most extensive reports you'll need to verify that you in fact have access to the site which you're looking for info about. Head on over to: Google WebMaster Tools and see what the Google robots have to say about your site. If Google sees your site as perfect, it has got to be better for your Search Engine rankings.