If plugged-in life has taught us anything, it's that no tweet goes unnoticed. That is, unless you program your tweets to self-destruct.
Once you authorize Spirit to access your Twitter account, you can use hashtags to specify how long you want a tweet to stay live before self-destructing (a tweet using the #3m hashtag, for example, would disappear in three minutes).
One demographic that might not be too happy about an app that lets users set their tweets to disappear forever: Twitter's advertisers. After all, it's hard to clearly measure the impact of, say, a Promoted Tweet if the retweets it garners no longer exist.
[Image: Flickr user Matt McGee]