Given the lack of commonality, it may not make much sense to add to the mail spam lists, since it would be an extra 2000+ records that would probably not get hits on mail.
The MT-Blacklist doesn't seem to update too frequently (the last new record was from 8/29) and has about 2000 records. Matthew's list was pretty sparse so far. So I'm still pondering things.
Jeff,
I could be totally wrong... but I suspect that the lack of commonality may be more due to either the MT-blacklist not being updated as frequently or because the MT-blacklist may not be updated as extensively.
A good test may be to "Google" some more frequently found SURBL-blocked domains which are not on the MT-blacklist along with the phrase "moveable type" ...you might find a lot of blog-comment spam which should have been on the MT-blacklist and is already in SURBL.
Moreover, blog spam is a huge issue and this presents a great opportunity for SURBL to make a big splash, all for a good purpose. If you get the "big-time" bloggers to write SURBL, you will soon find SURBL on the front page of cnn or foxnews, etc.
Rob McEwen