I am always intrigued by new "social apps" but this one does seem to have a bit of legs. You can create multiple actions using some very quick featues.
Peach is a social network that allows you to send messages or "actions" like waving, kissing, and "caking" - which I guess means "to give some cake". That's not particularly innovative, but Peach has a neat little function in its text commands. Rather than tapping your way through menus to post a picture or suchlike, Peach has a range of commands that make posting richer content easier.