My friend and fellow Google contractor, Philipp Lenssen, who has one of the most famous Google-related blogs on the internet has been sent a cease & desist from SEO Inc.
He exposed their ridiculous "link farm" tactics which lowered their ranking and eventually got them dropped from Google altogether.
These link farm companies trade pretending to be able to get you an amazing position in Google etc, charging you several thousand in the process then simply submit it to a link farm - that is virtually the extent of their "search engine optimisation".
BTW a link farm is a page like this:
http://9-allthe.info/warcraft/warcraft-3.html
Please show your support by visiting the link below:
http://blog.outer-court.com/archive/2005-05-05-n22.html
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Update: Google cache of original article:
http://64.233.183.104/search?q=cache...04-25-n62.html