With these goals in mind, we’ve been working with CyanogenMod over the past few months. CyanogenMod is an open source aftermarket Android firmware distribution with ten million users and ~20k installs a day. Their rapid growth is beginning to rival Microsoft for the third largest smartphone OS distribution.
As of today, the TextSecure protocol will begin shipping as part of the CyanogenMod OS-level SMS provider, in an effort to provide completely transparent end-to-end text message encryption between all of their users.
One of the biggest reasons secure messaging solutions don't have wide adoption is because they simply aren't user friendly. Granted, crypto is hard, but efforts like this give me great hope.