SwiftKey’s Head Data Scientist on the Value of Common Crawl’s Open Data [video] (commoncrawl.org)

If you don't feel like reading the paper Sebastian wrote on the Common Crawl data, he gives a summary of his findings in this video.

Link to full paper: http://bit.ly/14dxSJq

It is great that they cover a lot of languages.. Except they don't cover the one I use a lot which is Chinese....I had to buy Swype so that I can switch easily from English to Chinese.