Instagram's value-add used to be their filters and quick sharing options, but the genius of Instagram is that they used that to build a community. The Instagra

Instagram's value-add used to be their filters and quick sharing options, but the genius of Instagram is that they used that to build a community. The Instagram community is worth $1b+ because it's got network effects and it's an inclusive community, meaning that entire networks of friends join Instagram and love it. It's different, in my opinion, than Digg or Flickr because those networks were more narrow-focused and appealed to only the serious passionate users. Instagram is taking young people by storm and reminds me more of FB or Twitter.