Social media analytics firm Topsy has added Twitter's full seven-year backlog of public tweets to its analytics platform, effectively creating a Twitter search engine that analysts say beats anything either Twitter or Google can offer. While Twitter's search engine favors recent tweets, Topsy's engine uses Google-style algorithms to assess relevancy. "We're providing an even richer historical context that helps companies understand and deliver on what audiences want, fuel better marketing campaigns, and make better business decisions," says Topsy exec Jamie De Guerre.

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