To begin, you decide where you want to go, where you'd like to stay and what you'd like to see. Then you tick boxes and write in a little something, above, to give the tour companies a better idea of your travel style. Punch it all in and it gets sent out to Zicasso's network of providers. The tourism operators then see if they can help you out. Those that can ping you back via Zicasso.
You then have the chance to check over their proposed trips. (You'll get up to four responses per plan you submit.) At this point you can contact the companies for more info, hone itineraries, purchase the package or simply discard it. There's no obligation to buy if you're just planning.
Each company has a profile, so you can also shop for trips that way. Only after people use tour operators can they rate them, so you can be sure the reviews you're reading on the site are legit--hardly the norm on the web these days.
It's not for everyone. Zicasso isn't going after people who just need a flight to London and a hotel for a couple nights: Plenty of websites already do that. Instead, the service is going after people with complicated itineraries and travelers headed to places that are hard to research online.
The site's in private beta testing until Monday, when it'll open to the public.