Meceoo is a meta search engine which searches AltaVista, AllTheWeb and Inktomi.
"Its originality comes from the avaibility for users to create their own "exclusion list" in order to exclude from the result pages specific web sites estimated less relevant. Search results might be therefore entirely different from one visitor to another, according to everyone’s wishes.
Meceoo also allows its users to define preselected list of sites in order to launch a search only in their contents. It is, in this way, possible to generate requests on a given "batch" of web sites, for example inside a community of interest."
(from SearchGuild)
SeekScan is a new meta search engine which shows results from many different engines in their own groupings. They have additional tabs that many search engines do not (such as weblogs). Cool as Meceoo but in a different way.
(from ResearchBuzz)
Is Google using a filter on some of its results? Many people say no, but why does 5 htp.cc list at #1 for hyrdoxytryptophan, but is nowhere for 5 hydroxtryptophan?
Why does bicycleattorney.com rank #1 for bicycle attorney, but is nowhere to be found for Oregon bicycle attorney?
Wether you call it a filter or a bell curve, I believe Google is somehow delisting some overly optimized web pages which are not integrated in the associated local community link structure.