Myszon Brzozowski
Myszon Brzozowski voted up Anonymous' answer

Here's the few worst black hat techniques that might really hurt your business badly if you'll use them directly on your money site, that's why I always recommend using tier backlinking techniques.

1. Blog commenting

2. Forum profiles

3. Social bookmarking on crap and full of spam sites

4. Wiki backlinks (wikipedia and other authority doesn't fall in this … Read more

Myszon Brzozowski
Myszon Brzozowski voted up mark rushworth's answer

It's one still employed today. That of burning domains, redirection and volume buying of low quality links. This technique makes use of the honeymoon period Google applies to new domains before PageRank and other metrics have been applied. Search for pay day loans, click almost any link and I'll bet the domain you end up … Read more