Don't put anything in there that you don't have saved elsewhere... as soon as the board server crud gets sorted out, and the site moves to whatever server its GOING to get moved to, the galleries are going to be shut down. Its a rather useless feature considering you can't post pics directly from the gallery into the forum here... also, not many people use it, and its just a bandwidth drain.
So... use it while its there, but expect it to disappear soon. kthanks!