That is a parameter of the profile, placed there as a demo, and you suppose to change it with your own.
Confusing is the fact that instead of looking into the parameters, checking the instructions or searching the forum you chose to post a review here, complaining about something that most free extension have and aiContactSafe doesn't : a link back to our site.
Add the plugin, and then add :
Add your visitors can post via Facebook, yahoo, AOL or Hotmail/Live Mail.
I only wish it included Google+/Gmail.
But for free, it is amazing.
The online documentation is not in English, but I can't possibly see a single reason for it.