How to add captcha to Personal Fundraising pages?

Alicia Searfoss

Can someone explain what they've done to add captcha to Personal Fundraising pages?  We have an annual contest going on where people can vote on pages and we've suddenly seen a huge uptick with spam messages.  (You can see an example at http://www.nativepartnership.org/site/TR/Events/PWNA-RAR?pxfid=2812&fr_id=1040&pg=fund.)  I know from earlier conversations that the captcha doesn't catch them all, but I'd love to at least slow them down.


Thanks in advance!