Hi Justin,
All of those are "www.{RANDOMWORD}.{com|net|org}". Eventually there's one real link, which *is* SURBL-listed. These are chaff.
Now, SORBS for one seems to be listing some of these sites; presumably because they have a spamtrap-driven feed without enough human moderation. That's the danger here.
(btw, there's arguments to be made that a better selection mechanism can "weed those out", but that needs to be careful too.
- Ignore .org/.net/.com? spammer will use .biz, .info, and ccTLDs.
to use <a href=...>{RANDOMWORD}</a>.
- Ignore 0-length links (<a href=...></a>)? spammer will change
from google, so "real" sites.
- Ignore "dictionary words" somehow? spammer will use random URLs
so I don't think those approaches have much merit alone.)
Its 'just' a extra source, ... on mu pot i found a couple domains that were indeed spammer domains but not listed yet. It involves some manual action but i think its nice additions.
Bye, Raymond.