Flickr offers a terabyte of free photo storage, that's enough space for half a million photos! And the best part is you can set the Flickr app to automatically send the photos you take on your phone to your Flickr account in the cloud.
Just so this app doesn't use all the data in my data plan, I set the app to only do the uploads when my phone is connected to wifi. The best part is I don't have to think about it or do anything for photo backup. My photos are always available to download to my computer anytime, too.
