I recently had to switch a sites domain name as it turned out I was breaking an advertisers TOS by using their name in my domain, it was a .info domain. So I coughed up and paid for a nice .org, that diddnt even have the keywords in, and 301 redirected using htaccess from the .info to the .org. The next day this BRAND NEW DOMAIN was on the front page of Google and has been there for over a week now. The original .info was pretty new as well < 1 month and was ranking on the 3rd page of Google, which strangely enough still is. I have also found that my .org has made it onto the 2nd and 3rd pages of much tougher keywords, including the actual advertisers name! Either way I was pretty surprised to see this happen. I am putting it down to the ability of the .org to rank better.