I my opinion, social media sites tend to be severely overhyped. Facebook, MySpace, etc tends to be frequented by horribly invaluable traffic. There are a few exceptions to this, and StumbleUpon is a big one.
This post aims to cover a few mistakes to avoid when starting a new site. They are mistakes seen all the time, and have been committed by most people.
Shoemoney has a great post about a new (well, kinda new) way to spam your links and not get caught. Basically, you get your site ranking first for any random keyword, then pass your link as the "I’m Feeling Lucky" link through Google. To show an example, see the following:
Just for fun I thought I’d search for "search engine" at the major engines. Here is what I’ve found.
We had a website ranking #2 for one of our targeted keyword phrases in Google. We ranked #1 way back when, and have been at #2 for a few months. Last week I decided that I needed to do something about that. We have a main site, with a page at www.site.com/xxxxx_xxxxx.html. We also own xxxxx-xxxxx.com which was a forward to our www.site.com/xxxxx_xxxxx.html page, and that is what was ranking.
