SEO stands for search engine optimization.
It is, along with building links, the most important part of getting your website ranking for all the keywords you want.
The fact is that search engine traffic, being organic, is probably the best type of traffic there is for one very simple reason: it's free! But the road to start getting it is actually the hard part which is why there are so many SEO services out there. We'll be revewing SEO Link Vine.