I've noticed a phenomenon recently. An old old interesting question pops to the top of the activity queue. I look at the question and can find no activity on it...except for a couple hours ago a spam answer appeared, but was thankfully deleted right away.
This is only one example; it may have been happening all along, but I only recently noticed a few.
The question is this...should this behavior (of SE, not the people) be modified to not bump it to the top?
My first inclination is 'Yes! Modify SE to Suit My Tastes!'. But that's extra work for the developers; also, the random bumping isn't so terrible, just somehow intellectually disconcerting. Also, I think we'll survive without doing anything.
So, change or leave alone?