Alright, I think I closed most of the bugs and the back end seems to be working fine, so we might as well release it now. It has kind of a corny name, so feel free to address it as the "buttons of democracy script", as I like to call it. My previous post also contains a preview, if you want one.
The script works simply enough; you can only vote when signed in, you can't vote on frozen posts (those are posts that me and Acn have to lock manually from being liked, things like "vote up if you agree" and such which I hope it will not come to), can't dislike/like a post more than once, etc. This just adds like buttons and I can't really see where people would find room for abuse, so if you manage to find a way to dick around with this script then truly, kudos.
The script will check for updates and install them if necessary every few hours for Chrome and whenever you have set Greasemonkey to automatically check for updates for Firefox. You can also update them manually by using "update extensions now" from chrome://extensions or checking for updates in Greasemonkey for FF.
Note: For Greasemonkey, the script will not check for updates automatically if you don't configure your settings to allow non-secure update downloads (Greasemonkey Options > Require secure updates).
Chrome
http://gm.bungie.co/ctjl96/BnetLike.crx
GM
http://userscripts.org/scripts/show/131093