I've been reading the various solutions, and intend on getting to work on some of them tonight, as I've been hit with the poker spam today also. Every few minutes I'm getting another email alerting me that it's in the moderation cue.
I did a Whois lookup and found the domain is registered to and has the contact information listed as:
3 Connel Drive
Berkeley Heights, NY 07922
and the telephone number 1-908-234-2243
I haven't yet, but I'm about to call this number (nearly 2am EST) and complain about the spam coming from these domains.
I have no illusions that my call will make any change whatsoever, but it will certainly make me feel a little better, and if everyone on this forum who's been spammed does the same, it may actually make a dent.
Also, I urge everyone to post this information on their own blogs and ask your readers to call as well, as this spamming is threatening to change how many of our sites are set up.