I sent some stuff in to Tiny Mix Tapes a couple years back, but decided I didn't have the time to do it and additionally, was skeptical about throwing my hat into the ring when I know very little about music from a technical perspective, although at the time I didn't realize that that goes for, oh I dunno, like 99% of all music critics, particularly those who focus on pop music.
I kinda wish I'd followed through with it at this point, but eh, I don't even write for fun anymore.