Displet Pop shows a pop-up window on a specified page load after a specified time elapses, prompting visitors to complete a contact form or other acti
It does work. Watch the tutorials here: http://displet.com/wordpress-plugins/displet-pop/
It does work. Try disabling your other plugins to see if any are conflicting. If there's a conflict, let us know about it in the support forum, and we'll fix the conflict if the problem is on our end.
Most likely to encourage newsletter registration or display a welcome message to your visitors.
On the support forum at http://wordpress.org/support/plugin/displet-pop.