the passive aggressive alternative to conflict!
Feckr is an Android application that allows you to secretly "tag" people with messages. Tags are anonymous, permanent and public - every Feckr player can see all the tags for people around them. Unless they also play Feckr, your victims will never know what you really think of them.
The only problem: Feckr is scattershot - when you create a new tag, it gets applied to everyone nearby, whether you mean it or not.
You can use Feckr to explore how you meet the same strangers frequently - for example that wanker on the bus that drinks in the same pub - and share a secret world of playful mischief with other Feckr users.