The free version of vlingo lets you speak text to anyone who also has vlingo, gotta pay 17.99 for the speak text anyone. You missed have the totally free vlingo about a month ago
Guys found a cool TTS (text to voice) application in App World today, I guess its a very recent addition .. called mailTalk by Maildover (?) go to BB App World, under productivity and utilities->on the go productivity, or just search for "mail" ...
The GUI is not state of the art but it works nicely for me, I have Storm, Verizon .. you can choose either auto mode where it reads every new email as it comes, or manual mode where you invoke it when u want. Choose either make or female voice, female voice sounds kinda German?? anyway have fun .. its nice when u driving the car or walking etc, may help also people having troubles reading the small print