Sure there are plenty of of image hosting sites out there, but it can often be a pain to take a screen, upload it, get the link and so on. Especially say if your trying to explain something to someone quickly, visual cues sure can help.
GrabUp is a new application exclusively for the Mac which makes sharing screenshots a complete breeze. It’s as simple as taking the screenshot, waiting a second, then hitting Apple + V. No website involved, no clicks, no browser needed. It’s surprisingly fast, and hopefully stays that way over time.