The acronym of the name of this site is something that I think may get used much more than the site name itself, which is "The World Is Not Flat" which makes the handy acronym TwinF.

Once we start trying to build some buzz of the site and get a lot of contributions, I think it'll be important to have a short name that works for tagging. 

To make sure our bases are covered, I just registered the domain TwinF.com for this site, so that anyone who only knows the TwinF name can use it...

It'll be a few days till it's active...  I registered the domain with Dreamhost for about $76 for 5 years.