The folks at Microsoft adCenter sent me a promotional code for our readers here. A $50 promo code is available to all new advertisers, valid through 1/15/07. The promo code is SEL1206 and here are the terms and conditions.
* Promotional Guidelines: Offer valid only through 1/15/07 (midnight Pacific Time). The promotional credit is valid only for new advertisers opening a new account with Microsoft adCenter. The $50 promotional credit does not apply to the one-time $5 activation fee required to open a new account. Promotional credit must be fully redeemed in click spend within 90 days of sign-up. Advertisers will be charged for advertising that exceeds the $50 promotional credit. Advertisers will need to suspend their ads if they do not wish to receive additional charges beyond the free credit amount, or after 90 days from sign-up. Promotional credit good only to residents in the 50 United States and Washington, D.C. Limit: this offer is limited to one per customer. This promotional offer may not be combined with any other offer or discount, separated, redeemed for cash, transferred, sold, or bartered. There is a minimum bid requirement of $0.05 per click through in adCenter. Search listings are subject to editorial review. See Advertiser Terms and Conditions for more details at sign-up. Other terms and conditions may apply.