This is what I've done with my newsletter form and it works pretty well. It would likely be possible to get some more signups by adding a popover form but I'd b

This is what I've done with my newsletter form and it works pretty well. It would likely be possible to get some more signups by adding a popover form but I'd be doing it at the risk of annoying readers that would have never signed up. I have noticed that some sites make the popover happen when you mouse off of the window to the back button, which kind of makes sense because you're leaving anyway.