Does anyone want 3 hours of double xp? Dewxp that I won't be using...

I don't really co-op MW3 so I have no need for the xp but I am addicted to Mountain Dew so someone gets to benefit... I guess the first person that gives me their gamer ID and their platform (XBL-PSN) I'll give the 3 hours away. Since I'm not very familiar to how helpful that would be should I give 1 person 3 hours worth or give 2 people 1.5 hours?