yahoo域名注册1.99美元首年，有效期至2012.3.31日，注册地址：http://smallbusiness.yahoo.com/domains/?p=YDMCALL
中国内地的就不要注册了，yahoo发现以后会退款的。
Offer open only to new Yahoo! Small Business customers purchasing a new Yahoo! Domains plan through Yahoo! SmallBusiness. Offer expires 03/31/2012. Offer applies to the first year of service for a single Yahoo! Domains purchaseonly. Offer not valid on additional Yahoo! Domains plans purchased in the same transaction in which offer is applied.Limit one offer per customer on one Yahoo! Domains account regardless of the number of Yahoo! Domains accounts owned.Offer can be used only by purchasing customer. Offer may not be combined with other offers or discounts, transferred,exchanged, or redeemed for cash. Other terms and conditions apply; see the Yahoo! Small Business Terms of Service whenyou sign up. Yahoo! expressly reserves the right to change the price or features of these services at its solediscretion anytime.