Privacy policey updates all happening at once

Just saw three policy updates (Yelp, Quora and Coursera) and probably more in the past 24 hours.

What is it with companies doing such things over christmas, do they think they could slip it thru and nobody would notice.

Certainly is a trend that's sprung up this season. I mean if I wanted to slip something past somebody without them looking in detail, a festive holiday would be the way if I was into such devious tactics.

Anybody else noticed this recently or is this an annual thing that's slipped me by past year?