Pretty awesome tool, just type in your link and find out all kinds of information on your page! I'm not sure where I found this, it might have actually been here , if this has already been posted then I'm sorry, but I thought it could definitley help alot of people out! http://www.scrutinizethis.com/ One really cool tool is the "page rank overlay" it shows the page rank of every link on your site. pretty cool! - 21 links to help with SEO - 14 links for validation - 9 links for accessiblity - multiple browser testing - find out if other pages have the same content as you (plagarism) - plus lots more **I'm not sure if the adsense forum is the right spot to post this, sorry if it isn't** also, if you know of any other tools, whether it be to aid in adsense in some way, or any webmaster tool, feel free to post, I'm sure tons of people would benefit from the veterans' knowledge.