Right, did a quick look-around.
Seems as if either OFPEC, YaBBSE or both dislike freewebs
What happens is the OFPEC URL is tagged into the beginning of the real URL, creating the bugged version.
How are you defining the URL btw?
www.blahdididor
http://www.bladdidiI suspect it might be a bad case of lack-of-http-prefixitis going around, and chances are YaBBSE poops on you for that.
If you didn't add http://, try doing it and see if it solves it.