There is such an East Coast Bias on Twitter. As far as the subject matter goes, it’s no worse than any other medium. But I’m talking about when people tweet:
See that spike between 9 and 10 am EST? Twitter users on the east coast can basically wake up and tweet-away, while west coasters must slog through the accumulated 3 hours of that spike and then start tweeting. It can be a real chore.
Perhaps the west coast work flow should go: Tweet, then slog.