I think some of them are funny, the original SF was one of the funniest posters I've seen on the forums. Problem is the imitators never seem to be as funny as the originals. Plus too many of them too often does drag the forum down. Takes talent to run a top-notch ghost.
I vote to have them released, all of them, even WVU's wife. I'm sure we're going to be surprised by who some of them are. Doing this would be good though, not only will it be fun to guess, also the people ghosting will know going forward they are going to outed one day.
Being a moderator- you should go through with this. Make it good clean forum. I think you know which ghosts and bullshit, meaningless threads need to be moved. These threads take away from the good content here. The old LVA board got into a pissing match between posters and that lead to it's demise.