I found this site with some great ideas on Link building! The more I read the more people are saying that backlinks are the thing you need to really help you in the search results!
What are Backlinks?
Inbound links were originally important (prior to the emergence of search engines) as a primary means of web navigation; today, their significance lies in search engine optimization (SEO). The number of backlinks is one indication of the popularity or importance of that website or page (for example, this is used by Google to determine thePageRank of a webpage). Outside of SEO, the backlinks of a webpage may be of significant personal, cultural or semantic interest: they indicate who is paying attention to that page.
So the idea is more people that link to your site the more useful information you have.
The Hazards of Backlinks
You ask how can there be hazards in people linking to your site….well Google since they now put so much weight on backlinks they are very particular on where your links come from (porn, waze sites, etc are frowned upon) established sites with a good page rank is preferred.
So be careful going on to ffiver and paying someone to create you 16,000 links, that just might get you Sandboxed!