[joshu]

Most frequently, I will hit the messaging app and it will go into Twitter, rather than the SMS app. I am not sure that is the same thing.

[jackowayed]

I had something similar happen to me on my Incredible once or twice. I can't remember if I hit Twitter and it went to GMail or vice versa.

It's odd that Twitter was involved for both of us. I wonder if they're doing something weird ... though I don't know any android.permission.CONQUER_OTHER_APPS permission in the API.