Instagram is something I have always had.
The cameras now on smartphones are getting a whole lot better also. Some of the images from my iPhone have been mistook for my 'proper' camera imagery which is insane. I recently saw that you can buy some attachment lenses for your phone, this is something I will definitely look at doing in the future as I don't always have my camera with me.
I've recently started following Insighting who's profile is a mix of urban architecture around New York City. Go check his profile out as it offers some great inspiration, especially for composition!
If you have Instagram, please give me a follow and say hello @dsmithonline.