Hopefully I can answer your queries about the website. I am one of two co-founders of Globetrooper. Currently we have funded the entire thing and have not made a single dollar from it. We're trying to build a community of like-minded travellers who want to meet others to travel with. So basically, if you've always wanted to mountain bike in the Trois Vall�es in France but all your friends think you're crazy, then you should be able to meet someone, somewhere in the world, who also has that same aspiration, and then you can make it happen.
The trips and trip details are all user-created. So the cost of each trip is an estimate from the creator of that trip, not Globetrooper.
Later down the track (6-12 months) we'll be implementing a business model, but this will be quite distinct from what the site is today - we're thinking something to do with local guides and a booking system for them.
Here's a link to our press release at launch if you're interested in knowing more: http://www.travpr.com/pr-1401-travel...-discover.html