Vine

A new social networking app from the founder of Vine. Being able to type keywords to add things to messages, such as GIFs or a dice roll, is fun however autocorrection gets in the way. Currently I can’t search for friends to add as there is a problem adding non-US phone numbers.
As with many new-idea apps this is iPhone only. Even if you are well funded its sensible to choose one launch platform - and if your target market is primarily the US to start with iOS is the best choice.

Will be interesting to see how well a completely new social network does which relies on remembered keywords for its USP.