For the fun of it I just checked my posting stats and only a bit more 20,000 of my posts have been on the Caption This! and Complete This Phrase / Fill In The Blank(s) boards.
Apparently I've been better about spreading my posts around than I think.
But then there are currently 143 different boards on the forum at the moment and only 42 of them are Caption This! and Complete This Phrase / Fill In The Blank(s) boards.