Twitter was taken by storm earlier today due to a cross-site scripting vulnerability, exploits of which spread like wildfire on the micro-sharing network. The company issued a statement a short while ago, saying the security flaw was identified and now fully patched. Now that Twitter says it's safe to return to the #NewTwitter (I finally got it this morning), check this out: the web app now comes with two new features, namely reply-to-all and auto-complete of usernames.