Hmm, so this doesn't quite tie in with what I was seeing (see post below).

However, "Beyond the Network America" does ring a bell. They were the source of a recent mass signup of users on various Geeklog sites. In essence, a bot created a new account, waited for the password email to arrive, logged in with that info and went right on to post spam. And all that came out of IP ranges owned by Beyond the Network America. I've sent them an abuse report, but haven't heard back and the signup attempts didn't stop either. Consequentially, their IP ranges are now blocked.