Path hasn't held the same grip on social networkers as Facebook or Twitter, in part because it's almost too social -- you can't really control which friends (or friends of friends) see a post. The solution in Path 3.0? Recreate your Trapper Keeper from grade school, apparently. Along with introducing a much-appreciated private messaging system that lets two or more friends share text, maps, media and voice messages, the update lets us slap expressive stickers into the conversation when a basic emoticon just won't do. Of course, that's also how Path hopes t
