[Fixed, See bellow]
I am having this strange issue with Facebook and Twitter integration in OS X Mountain Lion. I made this -very- quick video as an illistration to those at the Apple Support Comunities (and anywhere else I may ask for help), but for anyone else that may see this video, please feel free to offer any advice in the comments; it would be much appreciated.
(Comments like "get a PC", or "Macs suck" will be removed)
EDIT: Thanks to matracy68 on the Apple Support Communities this issue has been resolved! You only need to (re)install this update:
http://support.apple.com/kb/DL1600