Twitter has begun experimenting with an account, called @AchievementBird, that will direct message you ‘achievements’ that you earn with your tweets. The account is protected but has granted follows in the past few days.
Once you’re on the list, the account will occasionally send you messages about how one of your tweets has performed. Xero engineer Owen Williams noted the account on Twitter, as well as a couple of the messages that he had received so far:
read more via techcrunch.com