We have been following and studying search engine techniques for the best ranking, for over 10 years. Most companies in this industry are fly by night companies that have only been around for less than a year.
Every search engine ranks sites differently According to Netfactual: Google (35.11%), Yahoo (32.79%), and MSN (12.08%) have a majority share of searches performed on their sites. Therefore, we focus our efforts on optimizing for these three engines, instead of trying to optimize for all search engines, which is not effective.
These are some of the search engine related we can perform: