My reason is to be loyal to the SFI system. It is not going crazy spending a lot os TCredits in it. It is pure luck to win, but the jackpot is now at !!!! 7,000+ TCredits !!!!!!! DO YOU IMAGINE WINNING???? It's a huge truck load of TCredits. I have entered 3 guesses already and will enter some more when I can spare more TCredits. You get 1 action VP and 5 MRP per TCredit used.
