Hi Ryan,
postsnet.com -- Registered exactly one year ago, 51 NANAS, blank home page, ehh... but I have 4 different legit newsletters with links to them. webspawner.com -- Created in 1996; free host/email npdor.com -- Surveys; been around since 1999. 103 NANAS, but they've been advertised by some reputable "word of the day" mailers (dictionary.com) Maybe a good candidate for UC. :-) 2 examples imninc.com -- Domain is 507 days old; they do newsletters. At least one of them is legit. :-) worldhealth.net -- It's 3468 days old today (1995). One of our users attended a conference of theirs, and signed up for a newsletter. hoteldiscounts.com -- 2459 days old (1997), found in actual room booking confirmations for Comfort Inn.
Some are also found in Joe's list, Joe can you have a look what triggered them? Postsnet is a little tricky, they seem a little 'grey' ... the rest i could not find much references to.
Thanks! Raymond.