The information is also at spg.com under the Terms and Conditions of Membership:

http://www.starwoodhotels.com/prefer...onditions.html

4. Starpoints can only be earned for amounts actually paid with respect to Eligible Charges. Starpoints cannot be earned in conjunction with complimentary, barter or award stays. Starpoints can be earned for eligible incidental charges paid for during these stays. If you are a registered guest, you may receive Starpoints for Eligible Charges up to three rooms (i.e., your room plus two others) if all such rooms are registered in your name and you personally settle all room charges upon checkout. Multiple rooms on the same stay count as only one "stay" in order to earn elite levels of membership and for threshold bonuses and promotions. Starpoints can be earned on charges for no-shows and early departure fees, less taxes and service charges; however, these earnings will not count as a "stay" in order to earn elite levels of membership or for threshold bonuses and promotions.

Sincerely,

William R. Sanders
Customer Service Coordinator
Starwood Preferred Services

[email protected]