Delete all you want. Once you tweet something, it's out there forever. Ask Chris Brown. Or Gilbert Gottfried. Or Anthony Weiner.
Put videocameras in the hands of millions, give them a platform to share the results with the rest of those millions, and bad decisions are sure to ensue. Often after a few cocktails, or if you're a celebrity.
Given a new tool with which to share, or overshare, we all can expect more Twitter missteps. Many of us can't wait.
5. Continue the rebirth of "GIFs"
OK, this one is already under way. Years after the Web gave us Peanut Butter Jelly Time, folks have rediscovered the joy of watching something quick and silly happen over and over again.
Vine builds on this idea. Your six seconds (or fewer) of video loops for as long as the viewer lets it run. This can be disconcerting and annoying. But as folks get creative, it could also be clever. The first person to re-enact "Dramatic Chipmunk" has our undying devotion. (Fun discovery: That YouTube classic is exactly six seconds long).
A Vine isn't actually a GIF (Graphic Interchange Format is the full name). But it can take advantage of the same instincts that have made GIFs an enduring Web feature.
6. Press the competition
Vine isn't the only mobile app jockeying to be the "Instagram of Video."
Viddy, Tout, SocialCam and even the ill-fated Color all wanted to become the front-runner in this emerging social field. Twitter may have shut down that argument when it acquired Vine for an undisclosed amount.
Sure, the mobile space has its share of stories in which the bantamweight manages to dance around a heavy hitter. Remember when Facebook Places was supposed to crush Foursquare?
But Vine will be sitting right there in front of Twitter's more than 140 million users. The others will need to innovate or die.