MPs criticised for accepting 'Mickey Mouse' medals - Telegraph
Short summary: It's an Armed Forces Parliamentary Scheme (AFPS) medal awarded to MPs who have been involved - voluntarily - with HM Forces for 10+ years. Each year they must 'be involved' for at least 22 days a year, and to date only 10 have been awarded. They are commemorative and not military awards, and as such are worn on the right breast, if at all, but not intended for parades such as Remembrance Day.
Seems fairly pointless to me, but certainly quite different to the petition rant, even if MPs are all a slippery self-serving bunch of w@nkers.