Don't know what this guy used exactly, but GifCam is really good - http://blog.bahraniapps.com/gifcam/ - it's not fancy, but it's well done on the engineering side, maintains good FPS when capturing and compresses really well.
Problem with that us the buyer could be FB Sec. Now they have a targeted account to watch and find the vuln. themselves. Better option is to find a random famous person and do the sane thing.
