features: what does it do? why do we need it?

bugs: repro steps (I did X and expected Y but Z happened!)

After the last update, I'm getting regular page crashes at intervals that I can't really figure out.  Usually it's one or two tabs that flip to the "Aw, Snap" page.  Reloading fixes the problem, but I'll often get a series of 4-5 crashes on the same page every minute or so, then it will be fine for a long while.  Tabs I haven't looked at in a while don't crash