something i've been curious about for awhile since i don't get around much in dwrp: what are some reasons you tag other versions of the same character if you have a friend who plays that character?

i assume some reasons include just being thirsty for that character regardless of interpretation, or maybe you know a player who happens to play the same character, but do you have any other particular reasons? are you just too nice to say your friend sucks, or is it never anything deep?