I'm pretty sure the CubeSat XI-V is more active on Twitter than I am. Given the way I make my money, that isn't a good thing.
The CubeSat XI-V was developed by Nakasuka Lab at the University of Tokyo. This satellite tweets about its internal temperature and location, and will occasionally throw in a Twitpic or two to keep things fresh. Whatever the CubeSat XI-V is doing must be working--at the time of this writing, the satellite has 2,729 followers. I never thought I'd lose the social media battle to a satellite. Prove me wrong technology.