The latest update for BBM on Android & iPhone is rolling out this week and includes a new 'Find Friends' feature that allows you to discover people you know that are also using BBM and invite them to your BBM contact list. The feature will detect which contacts in your smartphone's contact list are already using BBM, and allow you to send them an invite to join your BBM contact list. For those contacts that don't yet have BBM, you can invite them to download the app with an email or SMS invite.