Ok - If I got this right you can get 100,000 miles on each airline if you visit each continent 8 times. 4 continent RTW includes 6 continents for the promotion. You get 3 stopovers per continent and for $100 each you can get additional stopovers.

8 stops on 6 continents = 48 stops

RTW 4 Continent (12 stops) = $3600
36 additional stops @ $100ea $3600

800,000 bonus miles + actual for $7200

Now, can anyone do this in less than 2 months?