Snapchat just rolled out a big update with a bunch of new features, the most important being Replay. Now, every day brings a one-time chance to review the most recent message in your stream. If that makes you think twice about what you've been Snapchatting, maybe it's time to re-evaluate your life.
The Replay option is opt-in for recipients, not senders, and only gives you one extra look at the message -- it's still deleted from Snapchat's server after the first view. The rest of the app's updates include colour and black-and-white visual filters, a larger Helvetica caption font, front-facing flash (using your phone's screen as a flash), and an option for up to 7 "best friends." And a little puzzlingly, smart filters, which overlay the time, temperature, or speed you were travelling when you took your snap. [Free]