PokerStars has announced it will launch sports betting and casino games including Blackjack and Roulette on its websites in the near future. This is a great move by PokerStars to gain incremental revenue from its huge player base. But PokerStars should be very cautious about how it treats its players. It should be subtle about how it promotes these additional games to current players so as not to bother them or send them spam. The most important factor for PokerStars is to invest in its games and nurture its poker playing base.