So yeah, efemr is a web app that scrubs tweets after the amount of time you hashtag. Want a tweet gone after five minutes? #5m. Two hours? #2h. You get the gist.
The usual retweet concerns still apply, but if no one interacts with the tweet while it's up, it will pretty much disappear when you tell it to. You just have to connect your Twitter account with efemr so it can do all the dirty work.
If you're looking for peace of mind about every foray into social media or you want to say wildly offensive things and then deny that you said them, efemr might help you achieve some goals. It could even become popular for something like contests/scavenger hunts on Twitter. And people have obviously taken to SnapChat. But the retweet issue really gets in the way. The whole point of Twitter is that anything popular, interesting or salacious will be shared. If you're gonna go out on a limb you should stand up and be proud.
Or, you know, apologise profusely and blame it on scheduled tweets. [The Verge]