I just noticed on the BetUS Poker homepage that they increased their bonus from $600 to $1,000 until March 31, 2010. This is currently the largest bonus I've seen on the Cake Network.

Use BetUS Bonus Code: POKER1000


BetUS Poker also has a 50% monthly reload bonus up to $300 with the reload bonus code: 50%MATCH

Like all the other bonuses on the Cake Network (Players Only, Doyles Room, Cake Poker), you will only have 90 days to earn the bonus.