Originally Posted by HandballJim

Save your money...and register a .com

When you go to register a domain...and the .com is taken...usually the other extensions are available (of course not one word domains)...why because whoever owns the .com will in the long run take traffic from the other names with other extensions. If your trying to market to the largest consumer base in the world...America go with a .com , even if it is a four word domain. A hyphen domain is basically worthless...
Think like a surfer, I don't know many people who bookmark adult websites...and there is no way I will remember to add that hyphen. As far as SE traffic...just keep reading the posts about SEO on GFY and you won't need a hyphen name.

I always go in this order, .com , .net , .org anything else is worthless, now if you are trying to target a certain country by all means register the country extension. The worst possible extension is a .ws (I think this extension is black listed from SE)