Which domain (extension ) dominates for ranking purposes & SEO ? .com, .tv, or .org?
Also I heard that The problem with ranking a domain with a .tk extension is probably because if you check your website, you'll see the whole website is enclosed in an IFrame, which isn't good. what is your opinion?

Any domain name extension has the same weight for SE as others.

I think it also depends on the country's search engine being used as well. If you searched "mail" on Google.com, you'd get a lot of .com domains in return. Now if you searched "mail" on Google.co.jp (Japan's google) then you'd get a lot of .co.jp domains.

Originally Posted by cantletugo

I think it also depends on the country's search engine being used as well. If you searched "mail" on Google.com, you'd get a lot of .com domains in return. Now if you searched "mail" on Google.co.jp (Japan's google) then you'd get a lot of .co.jp domains.

That depends on content ONLY. Plus some SEO efforts should be done.

any standard TLD rank equally well as far i know .The reason people think that google like .com most because people mostly buy a .com