I would love Instagram to come to Andriod, but whilst it's not I'm using MyTubo.
It's a mixture of Social Networking and Photography.
You can take pictures and edit or select from your phone albums. The pictures can uploaded to Twitter, Facebook, Tumblr and others.
Great effects, and the app is updated regular so the effects increase and get better.
You can chat to people, follow other users, hashtag pictures, search members/hashtags/star pictures.
Very easy to use... love it. x