Affiliate since: 12/31/1969, Power Rank: 99999999

1. The games are FUN and relaxting
2. You can play T-Time for free and Trivia every second game is free
3. You can win T credits and earn VP
4. You can use your winnings to build your business
5. Trivia makes you smarter / improve your general knowledge

Those 5 reasons are enough for me but if you can think of more reasons you can convince even the stubborn affiliates to join in the fun