Apple has acquired the social media analytics startup Topsy.
The acquisition was first reported by The Wall Street Journal, which says the deal was worth more than $200 million.
Topsy is one of the few services that has access to Twitter's data firehose. It offers users a way to analyze tweets, gather sentiment and measure the reach of a campaign, hashtag or message. In September, the company rolled out the ability to search Twitter's entire archive.
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