Abstract: The invention provides in some aspects a system including a server digital data processor that executes on an ad server which is in communications coupling with a client digital data processor. An app executing on the client responds to display of an advertisement, effected by the ad server, by determining whether a user of the app has touched the screen (or otherwise responded to) a “get more information,” or other control displayed with the ad. If so, the app delays display of a web site or other collateral until the app reaches a suitable stopping point. At that point, the app queries the user to determine when and/or how he/she wishes to visit the web site and/or to have the collateral delivered.