I don't feel Google really cares. It seems to matter more when folks have to try to recall your site address from memory and they don't think to try .net and .org as well. If you plan to sell a site .com is very much better usually. I have both .net and .com sites. I will buy a .net if I can't get the name I want in .com. I have not tried .info at all. Oddly enough, some of the newer extensions the authorities have released are more expensive to buy right now from many registrars.