Here are some web sites you should take a look at (apart from CB of course!) if you wish to make new friends and contacts whom share your passion for Blackberrys.
Blackberry Avenue, (new site)
BlackBerry Ave. has the usual features of a social networking site like basic demographic information and interests, but has some unique features such as the ability to upload 1000 MB worth of files to share with other users. It also allows you to list your specific BlackBerry model and PIN. Blackberry Ave.
BBMNation
Bbmnation is a social networking tool that allows you to connect
with the people around you using BlackBerry Pins. .::BBMNation::.
Dateberry
An online community that restricts membership to like minded individuals who share a passion for the blackberry. Dateberry - unique needs unique solution