DON'T report anything please. Remember what happened last time there was an update and a bunch of people reported no changes? If your sites weren't hit, enjoy and keep banking. If they were hit, sorry.
It would honestly be a good idea for BHW to just not allow people to post if they were hit by an update or not. It just doesn't benefit the community at all. Who cares if your site was hit or not? Talk about the update itself and its characteristic, but don't go around mentioning that Googles update "wasn't good enough to hit your site".