OK. I think there is a difference. At teast at the beginning. I have about 20 domain names. all of them are .com and .net One is .biz (that i am using now) All domains was found and showed up in google after a day , Even if i did not add url or use google webmaster. But now it is 3 days that i have already added a url and submit sitemap, But still my domain name does not show up in google. Let us see how much will it take