Right now, as far as I can tell, there's no way for me to search the Forums to find posts by a particular Glitch.
I can find "mentions" of a player, but not threads started by a player or ones where the player has simply contributed.
This is frustrating, because many times I'm curious what else someone who's made an interesting comment in one thread has contributed elsewhere. It prevents me from seeking out more information about people with whom I might want to forge connections.