Yeah, we haven't found any voter fraud yet. [/sarcasm]
Its nothing new. First thing I thought of were all of the chemical warheads found in Iraq. Since the mustard gas had partially degraded, and each device could only kill hundreds instead of thousands, they didn't count as WMDs anymore.
So, apparently, if its 'old' or 'old news', it doesn't matter... Unless the news can be regarded as damaging to a Republican, then it does matter.
Examples:
Obama and his crew driving around aimlessly, on a quest for 'choom' instead of being a productive member of society? Doesn't matter.
Mitt Romney gives someone a haircut ? ZOMG !!!!111!!!!!!
Obama eats a dog? Doesn't matter.
Romney puts his dog on the car roof in a specially constructed kennel, complete with windshield ? ANIMAL ABUSER !!!!!!