Having DJs makes it somewhat more predictable than "crowd-sourced" GBS FM and its user-generated playlist. Not that it's bad, but listening to R'n'B followed by black metal followed by Zappa, requires a certain... mood. Or patience? Whatever, it's still interesting.
Ghetto and GBS FM are both connected to the Something Awful forums, and have their respective threads. Sign up, if you want to help with radio-making.