This is creepy. I was invited to join a text message service, which, upon reading the terms, decided I didn't want. This is the email they just sent:

J----', where did you go?

A few hours ago you attempted to join SMS.ac.

You didn't complete registration, so we made it very easy for you to finish. Just click this link, and continue from where you left off (we've remembered all the information that you previously entered). You're only 10 seconds away from completing!