I can hear them saying beetle as "beetcle" or some such. They click their tongues when saying the "tle" portion. Similar sound to what I think Shirhimes way of saying "little" would be. She spells it "liccle."
I'm on there, it's pretty dead but it's a nice alternative to Facebook for some non-forum stuff. There are some good little niche tribes but at the moment it's pretty basic and there isn't much conversation going on.
Carbolics and Fob Jockeys (the names of the tribes associated with May and Hammond) made me laugh though.