There is an interesting story in the NYTimes that shares some insight into how Google continues to tweak its search results as a result of complaints of users and bugs submitted by its employees. This article gives a lot of insight into this process and while they do not divulge exactly how everything works it does help to understand the process that triggers changes to the formula.
As anyone who attempts to rank well for certain search terms can tell you its becoming increasingly hard to gain the top three positions in Google for some competitive keywords and this article will give some insight as to what may help you grab those top positions. As many people have noted spamming the engine is becoming less effective and the best way to rank is by creating relevant and unique content. This is really no different than what you should always do in order to rank well, but spammers have been able to manipulate this in the past.
[tags]SEO, search engine optimization, Google, Search Engines[/tags]