Look at this great tool to use to power of facebook, myspace orkut etc...yahoo, gmail

hi guys
I found this website http://www.octazen.com/product_invitesender.php
they offer social media contact inviter and contact importer to websites.
I was wondering if someone can or has done some work on implementing a module using their technology.

I knew about this when i received a message from one of my friend asking to click on this link
http://www.unyk.com/registration/registrationmain.asp?cmpid=ois-facebook...

i thought she wrote to me turn out this website use a technology to get inside your facebook friend list and send them a message to join their site. (it suck I was getting ready to ask her for date...Lol) But great tool

if someone know how to design a module for it please let me know

thanks