Recently one of my sites (WebEvader.org) has quickly lost all of its front page rankings (around the latest Google update) and is not doing so well these days.

If you have 5 minutes to spare please could you have a brief look over my site and see what basic on-site SEO mistakes that I am making? Since I am quite inexperienced when it comes to SEO I would assume that the mistakes I am making are quite common, so hopefully this thread could become quite useful for others... Maybe make a checklist out of it or something for other people?

Anyways, any tips on what I should do to improve the site would be great!

Also, I purchased these two services a week before my rankings crashed. After buying these services my rankings went very high and then dropped very suddenly to what I'm experiencing now... Maybe they were the cause?!