After you make a guarantee, you can also click on the facebook icon. That posts a link on your facebook profile that your friends can see..The link is something like : 'I made a microloan guarantee for the entrepreneur Khini Devi and 6 entrepreneurs, Tupkadih on Unitedprosperity.org'
I have an idea for viral marketing:
Post in UP facebook group: http://www.facebook.com/UnitedProsperity.org
Ask people to invite their friends to the group, and
that a giftcard (of $50 ? or 100? ) will be given away when the group reaches 1000 members to one random picked of the members writing a comment to the contest message !