I don't know if anyone else on here also has the combo of Windows Phone and Airvoice, but here goes.
When someone sends out a group text, my phone number is included as +1xxxxxxxxx. I see myself as a recipient. This didn't used to happen with Straight Talk. The problem is that if I reply to their message in that thread, I copy myself, and get my message back to me. Not the end of the world, but is there a way to fix this issue?