Interestingly, I got very mixed customer service from them today (Cathi Gumpert responded to me three times), with the end result being positive.

First, she sent me the e-mail that started this thread (after I originally e-mailed asking why the money was taken out of my account). Then, I 1) responded to her e-mail, stating how unfair the expiration policy is, and 2) went back to e-rewards site requesting a credit (since my account is currently at $49.20). Here are the 2 responses I got:

RESPONSE FROM MY E-MAIL ABOUT THEIR EXPIRATION POLICY:

Good Morning

Thank you for contacting e-Rewards. I understand your position and we appreciate your feedback. I will certainly forward your email onto our marketing department so they are aware of your concerns.
We appreciate your interest in e-Rewards.

Sincerely,

Cathi Gumpert


RESPONSE TO MY E-MAIL FROM THE INTERNET SITE:
Good Afternoon

Thank you for contacting e-Rewards. Your account has been credited the .80.

Sincerely,

Cathi Gumpert