Recieving texts through email?

Hello all.

1. I understand that you can send free text messages through this site, is that correct? Where?

2. If this is true, where does the text go if the reciever replies to the text? Would it go directly to your phone, or to an email, etc.?

3. Is it possible to recieve free texts on my computer from a phone so we can chat back and forth without me having to be charged?

Thanks for any of the help you can give me.