Missed this thread 🙂
There is indeed now much interest in fat bikes,
If there better or not than regular bikes outwith the enviroment they were designed for is up to the rider and what he gets out of riding a bike.
Off the beaten track they are a lot of fun in the enviroment they were designed for providing massive grip and often will out ride your own ability 🙂
[video]http://www.youtube.com/watch?v=Pa15nakOl8k&list=UUSv198UD3Wy-dBsg3K40IvQ&index=4&feature=plcp[/video]