UPDATE: I was dismayed Thursday evening to find that the summary of a Twitter town hall I had created hours earlier using the web tool Storify had vanished, with a 404 error in its place. Today I found Storify's explanation of the problem: in short, someone on their staff deleted a database, wiping out many stories. The "restored" draft of the story survived, but contained only a fraction of the tweets and remarks I had collected. The live nature of the event Thursday means it would take too much time to search for old tweets and rebuild the item today, so I've decided to abandon the project. I'm sorry for any inconvenience.