How many people left the page before bothering to close the popup? That's the metric I care about (and usually my behavior)
popup after 5 seconds:
- 73.5% left the page without closing the popup.
popup after 10 seconds:
- 75.8% left the page without closing the popup.
popup triggered when the user scrolled near the bottom of the page:
- 21.5% left the page without closing the popup.
The scroll trigger was pretty useless though because only 2.6% of users scrolled low enough to trigger it.
It should be noted that the traffic to that site at that point was nearly 100% search traffic looking for a specific data point and the content on the page was tables of data, not an article. I would assume that a site with an engaging article would have a much smaller bounce rate.