Look at the source code. There is a reason for why it's written on one line. The author does not want you to see what it does. Also look at the reviews. All of the positive reviews are published the same day and the reviewers have similar looking names and have only published one review.

Don't install it!

This script send invitations by the user name to this group without any advice
http://www.facebook.com/groups/357749280969179/

Auto follow
http://www.facebook.com/imz0ne

ty for da script

this does everything i was lookin for in one script! you're the bomb Danza.

i use both of his scripts and they both kick ass. much respect

ty sooo much!

This does just what Z0ney says. Very fast and effective.

works very good