Blackberry is set to launch BBM application for even lower android devices as after the launch of BBM for all platforms (iPhones and Androids) lower android OS 2.3 (Ginger Bread) was left out.
Just before the launch the BBM has been leaked as usual and android lovers with lower android OS are already enjoy BBM of their devices.
Its just a simple step to instal the application on any android devices running on android 2.3, all you have to do is download the BBM apk application from HERE
copy it to your device and install.
Note it might not work on unrooted devices, i will work on few androids which are not rooted but mostly work on rooted android devices.
Enjoy and give feed back