I have not used upshot before, but they do look similar. The idea behind PicShare is to be extremely simple, so you do not need to setup any kind of configuration like which service to upload the screen shot to (PicShare uses http://cloudmine.io for the image hosting service). PicShare is also a more "temporary" type of solution. You can view your last 10 images, but after 10 they begin to fall off of the UI, as the idea behind it was for quick, simple sharing of images via slack or some such service.
Really PicShare was a good excuse to play around with Electron and build an actual app. I've never released anything before, so I decided to go outside of my comfort zone and get some feedback on this one :)
I believe he is referring to logging in as the other to transfer their goods once they have mistakenly given you the password. That's the unauthorized access, not naming yourself something that is similar to a moderators name.
Really PicShare was a good excuse to play around with Electron and build an actual app. I've never released anything before, so I decided to go outside of my comfort zone and get some feedback on this one :)