personally I really dislike fb policies on a lot of things from a intellectual property stand point. So while I have one mainly to stay in contact with family and friends i tend to stay away from relying on it.
personally for domain name i really like
http://www.chicagoplantedtank.org. Domains need to be easy to remember and simple to enter.
Fee's are minimal. Registering the domain name is all that really needs to be done. Right now it's about $12 a year and I am more than willing to donate/cover that. My web hosting space will cover most of our needs for a quite a while, unless we somehow get huge and start having lots of traffic.