I suspect that the Metafandom staff just does a periodic journal search for anyone who's mentioned the community in an entry recently.
I have no idea why they would have checked my LJ, I'm pretty much a lurker.

I think it *has* to be that someone pointed my post out, because it was a week after I wrote the post that it appeared on metafandom, and it just happened to coincide with the first time I spoke up in someone *else's* journal on the subject.

Whatever, what happens happens, I was just curious.