I did a little easier than that. I picked two people at random with vanity domains (assuming they'd advertise their key on their site) and did a keyserver looku

I did a little easier than that. I picked two people at random with vanity domains (assuming they'd advertise their key on their site) and did a keyserver lookup for them, and noticed that two keys were submitted to the keyserver on the same exact day for both of them: the broken one from this Web site, and the other one that they advertise as their PGP key. Same key type, same size, same date, same UIDs, different fingerprints. Not really data, but interesting nonetheless to OP's point (and, if true, a little more ammo in my disliking-keyservers gun). The real data is how often the exponent 281479271743489 appears on that page. That really points toward bugs in key generation, IMO. Bad gpg at some point?