Crowd-Funded Travel pages. What’s your opinion?

Hey guys, in these days there are almost everybody sharing with these pages in facebook, twitter, emails, even in my skype I get invitations.
http://www.fundedholidays.com
http://signup.trevolta.com
What to you think? How it can be free trip to somebody when it costs lot of money?
Crowd-Funded Travel pages. What's your opinion?

See original post by Rolas