They fail to mention their 3 pts = .5pts on other sites.
I love sales pitches like this. For every dollar of rake, we are really generous and will give you ONE MILLION POINTS! You can get a free keychain when you get to ten billion.
I got a $50 one also, though I've been playing there a lot lately (just cleared small dep bonus). I know that they don't all go out at once though so it may just take time.