It seems to me they have all the hallmarks of what google ends up punishing in other sites. Lots of outgoing links. No real content of sorts. Why doesn't google penalize the heck out of all of them and get them out of the rankings, let alone give them any pr? Some even profit off of listing. I don't get it?
You should check out plenty of the threads in this section then, you should be rubbing your hands together and smiling quite quickly if thats what you would like to see. Any other requests?
it looks you already have answers, then why bother to post here? just call matt cutts if you are not sure.
Might I suggest reading the forums a little longer before posting, you might "get" a little surprise.