To get into E-rewards you have to be invited. I have been a long member (11/2009) and received a bunch of stuff from them. Today they sent an invite to 1 of my email addresses. If anyone wants in, use this link HERE the link is normally good for 30 days.
Rewards received this year alone:
$100 Gamestop Credit ($75 received $25 ordered)
$10 Borders Credit (no longer offered)
$50 E-Bags Credit (no longer offered)
$20 JC Penney Credit (2x$10)