Popover solutions? (Conversion oriented, not ad oriented)

Hey gang. We (all of us) are mindful of our conversion numbers.Or should be.

• Adding live chat, if you have the resources to do it right, is always good. When is getting closer to your customer not a good idea? Unless you feed lions for a living.
• Reviewing your click flow through, before and after the funnel, is good.
• Remarketing is good.
• SEO is good.
• These last two play into a field of, "But wait, there's more." You don't want that prospect to leave without KNOWING they saw your call to action. That you did everything you could to convert them.

Enter the "OnExitPopupScript". There may be a better name for it. I don't know. But, what I do know is if you interrupt (yes, interrupt) your web visitor with a well timed, well placed call to action... your conversion will pop.

So, my question to each of you is, If you've implemented such a thing what solution did you go with and why? I've found one. But, I don't want to seem like I'm promoting someone else's tools constantly. Have at it...

What OnExitPopupScript thingamabob are you using? Go ahead. Name names. Link links. I'll show mine when you show yours ;)