GitHub has issues. Some are worse than others. But you can't really tell. Except now you can! Simply install github-plus-one chrome extension and go ruthlessly upvote issues (and pull requests) and make the world a better place.
Of course this would actually be a useful thing if one could also sort issues by votes. This however is much more of a technical challenge, so I'll leave it to Github. Hopefully a feature like this is not far down their pipeline. The purpose of this extension is rather to give people a taste of how it could be. And of course to disrupt Github greyness with an awesome looking button.
Button style stolen borrowed without permission from here