Likely all manner of things. We've seen attention from AHS, there were rumours of 4chan paying more attention to reddit a while back (or even planning a full blown raid, which doesn't seem to have materialised), and a lot of people are stuck at home with nothing better to do right now.

The latter point means that not only are we likely to get some new posters who are here in good faith, it also means it's very likely that we'll pick up more than our fair share of trolls who have nothing better to do.

I'm seeing slightly higher numbers of users present in general recently, and that fits the established trend. If nothing else, we're a meaningfully growing sub still.