[...] it’s a fabulous way to get caught up on your friends’ tweet history after you’ve taken some time away from the service [...] In fact, we can’t think of a better way to quickly review all the recent tweets from a select group. Even in clients like TweetDeck which allows for grouping, you’re not going to get as complete a history as you would with Reportage.

Very nice article from Sarah Perez about Reportage.