I see you added this for ease of linking. Just seems a little odd...we don't usually put mainspace redirects for userpages. If we did, I'd expect Brion and Tim to already exist ;-)
Topic on User talk:Jeroen De Dauw
It's to have a shorter/nicer URL. If it's a problem, I'll just remove it again, but I don't see any harm done with it.
It's the only one of its kind? I realize it doesn't harm anything (it's hard to really cause harm on a wiki, yes?)...just a matter of "we don't do that."