Remember what SEO stands for "Search Engine Optimization". While many of you are going duh! SEO is a process of filling in the gap of the search engine limitations. If Google had a search engine algorithm with judgment as sophisticated as a real human mind (they aren't too far away) then websites would be ranked and indexed to their true usefulness, not whether or not there were title tags, keyword tags, content, etc.

We are a bridge to the imperfections in search and the end user.