Video recording of Sean O'Halpin discussing his work at the BBC involving twitter. He covered how they use Ruby to process tweets in realtime to discover inbound links to the BBC Zeitgeist and how they read the Twitter Firehose (about 1000 tweets/sec = about 90 million a day) and store the data in Amazon S3.

http://skillsmatter.com/podcast/ajax-ria/processing-tweets-at-the-bbc-1848/wd-1328