(Note: I've now taken down the bot, so tweeting won't work. You can of course run a similar bot yourself though.)
Bot for upvoting people's via Twitter. Usage is simple:
@stellarjob +++@thegdb cool bot!
See https://gdb.github.io/stellarjob/ for more details.
This project is pretty alpha. It's largely a proof-of-concept / a demonstration of the kinds of things you can build on top of Stellar. Use it, have fun, extend it.