Facebook engineering have been posting some really interesting information in the last few weeks. I've always wondered how Facebook manages backups for their MySQL data. It never occurred to me that they might be using Hadoop.

Kind of unrelated but the comments on this posts make me cringe:

"please fix the issues with unblocked people being invisible or it makes you look like complete idiots as programmers since they are still blocked after being clicked unblocked.....I think my seven year old could have coded it by now.geesh."

and

"but dese details cud help hackerz"