I work at Google, and here is where I saw most of their usage, but I haven't used them directly (yet). There are plenty of documents published outside, especial

I work at Google, and here is where I saw most of their usage, but I haven't used them directly (yet). There are plenty of documents published outside, especially on bigtable and other structures, for example: https://www.google.com/search?q=bigtable+bloom https://www.google.com/search?q=bigtable+bloom or http://www.bing.com/search?q=bigtable+bloom http://www.bing.com/search?q=bigtable+bloom