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Pikimal is a site to help people collaborate around decisions. As users vote and use the tool it gets smarter and produces search engine index-able content - comparisons, top 10 lists, and answers to questions. All of the comparisons are based solely on facts and users' votes, so results are better and more objective than what traditional search engines give.
Germane to Hacker News, you can take a look at an early Piki for VC firms: http://pikimal.com/best/venture-capital-firms/88 or if you'd rather see one which has learned a bit more, credit cards: http://pikimal.com/best/credit-card/19
We're working towards adding social tools to enable users to contribute and edit data, Pikis, templates, and comment on items and comparisons as per Wikipedia. Our hope is that by having a transparent way to compare and sort that we'll be able to turn back the tide of ever-present marketing and allow users to prioritize economical, ethical, and efficient solutions to their problems.
Please let us know what y'all think!