I did a post before actually that highlights some great apps here. Being an avid Android user, here's what I use: Picplz and Posterous for social networks, PicSay Pro for photo editing and Retro Camera + for on the spot filtered photography. What does that mean you ask? Here are a few shots I took in the back yard using different camera types with the Retro Camera app. You can see the differences in colors, borders, etc. This comes in handy on the go when it's not convenient to try to figure out how to shoot things that we see.
It's easy to see the drastic changes with each type of filter. That is how the cool kids take their pictures these days. So get out there and take pictures, the world is getting smaller, but don't think for a second people of the world wouldn't be interested in different perspectives. Especially with this now booming social web.