What? Another iOS photo sharing app? No, wait, keep reading! The just-released Piictu app (official site, iTunes) has some new tricks to show you.
Piictu's big idea is to treat the photos you post not as the traditional timeline view we associate with blogs and apps like Instagram, but rather as a series of conversations, each on a certain theme.
Suppose I post a picture of my dogs, Daisy and Jake. Any of my friends who see that -- or anyone on
