Instagram is a photo editing package that also comes with built-in social network features that has been available for the iPhone for some time.
Instagram now has over 27 million users worldwide and the good news for Android smartphone owners is that a private beta for Google's mobile OS is now in testing !
The application enables you to add filters/shading to your pictures and then share them easily with your favourite social networks. Supported social networks include Facebook, Twitter, Flickr, Tumblr, Foursquare, and Posterous. It also has a huge number of different filters and photo editing tools to make your images look extra-special.
Amazingly, the Instagram app is totally free and doesn't even feature any advertising !
Instagram should for Android very shortly and we'd expect it to launch in the next month. As soon as Instagram for Android is publicly released 3G will let you know !