I have a program that searchs the net for blogs with keywords that I specify, and shows me the PR of the domain and also the PR of the page I would be linking from, so I wouldnt say that they are all low quality.
Now that could be very helpful

Specially if the program can also check for NoFollow attributes.
I was speaking generally ofcourse.. about Blog comment posting "Generally" being considered low quality. But a linkback from a PR5 blog.. now that would hardly be low quality.

It's well known that their links, actually angela and paul say it themselves, are profile pages. So pagerank 8 forum and your profile is a pagerank0.
They don't hide that. I've actually subsribed to both. Are they worth it. Hmm, I dunno, $5 for 30 per month from angela isn't that much but they aren't good links. Also, you have to download a pdf file and manually go through them. Now I'm thinking not so good. There is a very simple search term you can all come up with and put it into yahoo site explorer. You don't pay the monthyly fee and you get well over a thousand of the same links. Those people who have bought this service before will know what I mean.