Inevitably, users will find themselves in situations in which they want to employ a specific application in an area with little or no wireless coverage; in a basement or concrete building, for example. Unfortunately, they'll be out of luck unless the applications updates themselves and store those updates on BlackBerrys, even if users aren't employing them.

, the mobile RSS reader for BlackBerry, is a great example of an app that stores updates on users' devices, so content can be accessed without wireless coverage.

7) Use Network Judiciously: Yach stresses the word "judiciously" here, because he says proper use of wireless networks isn't just about efficiently compressing data before sending it back and forth between BlackBerrys and the Web. Rather, the concept involves considering whether or not that data really needs to be sent at all, as well as how frequently.

For example, a mobile weather application may update itself every hour, even if the current conditions haven't changed in days. This represents inefficient use of the wireless network, since there's really no need for that data to be sent. An app that judiciously employs wireless resources will frequently provide a better overall experience without putting as much strain on the network, Yach says.

6) Leverage Push: RIM was the very first company to employ the now-industry-standard push technology that enables BlackBerry users to retrieve e-mail and other data without ever having to physical "fetch" it from the Web.