Leaking Driveshaft...HELP!!!

Also check for cracks along the splines and around the closed end of the splines.Sure looks like its coming thru the yoke otherwise the tranny side would be wet too.Just to clear up,do you park on a steep incline?The reason I ask is does this happen over night or while driving.If there is a small amount of play in the shaft it may be crocked and letting it seep out overnight.Just a thought.