If you've ever searched Twitter using their advanced search function (or indeed their basic one come to that) you'll know that it's not very good. Once upon a time it used to go back a month or so - now you're lucky if it goes back a week. So how do you find that tweet from nineteenhundred and frosty weather? Help is at hand in the form of Topsy at http://www.topsy.com/
It has a database of every tweet back to 2006, which is the region of about 425 billion tweets. Twitter is now pushing out somewhere in the region of 400-600 million tweets per day and each one is indexed on Topsy within 150 milliseconds - which is a statistic that I can barely comprehend - I don't know about you! If you'd like another statistic - the amount of data being produced by Twitter and Facebook is more than the rest of the web combined. It's all on Google? I really don't think so.
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