My biggest gripe with the Photos app that's tied in to Google+ is the hoops I have to jump through to manually back up photos to my Google Account when using a mobile device. Currently the only way to do it is to use the Share option and share to - yes that's right - Picasa, the service that was supposed to be replaced by Google+ Photos. Any photos you manually share to Picasa will now show up in Google Photos (not the offline part of it though). There's is another option but it's even more convoluted than using Picasa: Share - People - your own account. What sucks about that is you can't even pick an existing album. What's worse, there's literally almost no documentation from Google or anywhere else that tells the average user any of this...Google expects you to choose autobackup as your only option to upload images on your phone, and allows you virtually no choice as to what. It's pretty much all or nothing. Overall it's awful, and I dearly hope they never get rid of the Picasa option because if they do, there will no longer be a method to use Google+ to manually upload images of your choice.