One of the most effective link building methods I've found is to create authority Web 2.0 blogs as a part of a larger strategy. This takes work and effort, but the links are LONG TERM, and hold a TON of weight.
These are still highly-effective, but if you’re someone who is looking for even more safety with your link profile, then you need to start building SUPER WEB 2.0
Enjoy a good SERP move for a lower investment. QUALITY SERVICE... FAR BETTER THAN THOUSANDS OF WORTHLESS BACKLINKS...