iphone 4s - communications My phone Verizon (iphone 4s) is off contract/unlocked and I 
do not need voice.
However, I would like to use it to communicate over WiFi.
Is this possible (options) without a monthly phone bill..?
John
you can use certain apps to do this, things like google voice will provide you a virtual phone number which can do voice and sms.  as long as you have wifi, they do a decent job.

there's also a log of voip or messenger programs that do voice, but that's not so transparently behaving like phone number.