Many people assume that .org means it is a non-profit but many people use .org TLDs for commercial purposes.
Google's Matt Cutts has said that the TLD (top level domain) doesn't affect rankings.
Here is a quote from Matt Cutts on May 14, 2012:
"Sorry, but that’s just not true, and as an engineer in the search quality team at Google, I feel the need to debunk this misconception. Google has a lot of experience in returning relevant web pages, regardless of the top-level domain (TLD). Google will attempt to rank new TLDs appropriately, but I don’t expect a new TLD to get any kind of initial preference over .com, and I wouldn’t bet on that happening in the long-term either. If you want to register an entirely new TLD for other reasons, that’s your choice, but you shouldn’t register a TLD in the mistaken belief that you’ll get some sort of boost in search engine rankings."
Another thing to consider is that when you move your website to a different domain, you can lose rankings and authority.