my boards do feature one... but personally, i rarely, if ever, post there.
for the most part, its really just a free for all kinda board, where people will go in and, quite literally, post stuff that doesnt (have any right to) fit anywhere else. nonsensical stuff.
however... to each their own! some of my users love that -- they'll go in and have nonsensical conversations with one another. and, actually, they're pretty funny to read sometimes.