Ha, I just did a search and found a BoringBori, a boriboring, a Boriing, and a borring, all Boris. People need to be a little more original, I think.
ETA: I've seen a bunch of people in other places refer to the pet as "the Boring," so I doubt we can attribute this trend all to you. I'm sure your Neoboard post resulted in a few of them, though.