Shitty PR BackLinks in Shitty Blogs

Since posting on this forum concerning page ranked backlinks I've had a lot of people add me to Skype with big lists of shitty blogs with alexa ranks of 12,000,000 at best.

I've kind of wondered, does anyone buy this crap? And how the hell is it meant to return any traffic or anything productive at all?!

I've invested 0$ into backlinks, but if some one can prove to me it's worth my while and that there are worth while opportunities out there that you could refer/redirect me to then I would build a nice set of backlinks.