With all the high quality SEO forums (like this one) around why are people still using tactics that the Florida update nuked?
I expect that the techniques detailed in the OP work just fine today.
In fact, I'd suggest that the way the OP described link building is in fact one of the most common link building methodologies in use by ranking websites today.
There was a company exhibiting at the last pubcon (looks like they are likely at the next one) that had a similiar methodology down to a science. Very automated, very low end, very artificial, and I have ever expectation that it works just fine.
The link selling/bulk buying/artificial construct SEO firms are doing better than ever, and are quite likely the majority of the SEO companies out there. Even the white hats aren't true white hats anymore - you can't be. There's simply (almost) no such thing as a natural link these days in most industries.
I'd actually be tempted to try this stuff just for kicks, but I love all my little children too much to do that to any one of them.