i just made a new blog and whenever i go on my adsense account it says my site has blocked google crawlers. I added a robots.txt file to my ftp files but its still being blocked. any suggestions?
Did you check your meta robots tags ? Maybe you aren't letting search engines index your website and follow links which is why it could tell you that you blocked Google Crawlers from entering your website.
Just check out this thread about robots.txt file, you definitely find solution for your problem here. http://www.google.com/support/forum/p/Webmasters/thread?tid=7e94eb08b858d86b&hl=en