So, in the case of the map application in the article, he could allow a user to list 0-5 countries for 'free' then if a user wants to add more countries, they w

So, in the case of the map application in the article, he could allow a user to list 0-5 countries for 'free' then if a user wants to add more countries, they would first have to complete a survey for a travel related business. Alternately he could offer a 'prize trip' to a person who completes X number of surveys. He could also add a "I want to go here." feature and then send targeted travel deals/information. He could allow functionality so that a user could link their uploaded pictures to specific places they have been and even offer reviews of their trips that he could compile into a "College Student Created Travel Guide." 'Oh, I see that you are going to be traveling to France, $5 to access 1000 reviews and recommendations." Spring Break comes around, "Here is the Cancun special . . ."