I really kind of like e-rewards. It doesn't take much time to rack up the dollars, and it gives me some insight into who's marketing what.
Unfortunately, there's not much to spend the e-rewards on. I keep hoping in vain for that killer $100 reward, but I haven't seen anything yet that really excites me.
PS. I have amassed over $150. If the rewards options don't change, I expect to spend my e-rewards on AA miles and lift tickets (assuming they come back in stock).