I'm not against callouts, heck I've made many myself and been called out plenty over the years...
It's "matches" with time limits, judges and all that bollocks, I have a problem with.
I mean, how the fuck is it remotely possible to find unbiased "judges" for one thing, to decide a winner?
And who in their right mind revels at the prospect of thinking "Oh shit, I've got a flame match at 8pm! Better brush up on those pre-writes and cancel that game of snooker at the pub!"...
The whole concept is retarded. By all means, call other users out who you don't like, but just make a thread, where people can read and respond to it at their leisure, not be forced into some kind of weird online special olympics contest.