Why do you need my credit card for a free subscription?
Even though Microsoft Office Live Basics is a free service, we still require a credit card in order to validate that every customer is a legitimate entity. When you sign up for a Microsoft Office Live Small Business account, Microsoft performs a $1 authorization check on your credit card to verify that the card information you are using is valid and up to date. A temporary $1 charge may appear on your online credit card statement for a short period, but will not appear on your final billing statement for that period.
Requiring a valid credit card is also intended to decrease the likelihood that malicious users will sign up. Web-site scams, such as phishing or spamming, often use fictitious Web sites to deceive consumers into disclosing credit card numbers, bank account information, Social Security numbers, passwords, or other sensitive information. We limit the number of offers to one per credit card number as added protection against malicious users signing up for our service.
We also require a credit card to facilitate payment of any additional services you might sign up for (for example, the purchase of additional domain names or extra storage space.) With your explicit permission, we can establish monthly billing using your credit card information. You will be able to continue using our services without interruption and without having to submit additional account information.