keyplyr - 1:01 am on Aug 21, 2012 (gmt 0)
I dunno. I have a few and know of more sites with the same scenario - plenty of Wikipedia cites, entries in DMOZ, and thus heavily scraped, and none of them seem to be getting link notifications or being slapped (and I've asked) There must be a ginormous number of sites with the same circumstances. I just can't shake loose the thought that there's something else going on here.
I also had a large number of links from a forum I participate in.
I also have a couple thousand incoming links from forums/blogs (not from me) and I've never had a "uncommon links" notice/penalty.
I tend to think that there's an incoming link from a site who's been caught for selling/buying links. You could have been caught up in the mix. This also could have been dome by a competitor.