CD Japan just announced that they have a Holiday promo of free 1000 pts to your account if you purchase anything using Paypal that goes above 5000 yen. More details of this promo can be read here. Promo will last from December 13, 2011 to December 31, 2011.
Have to point out that I haven't purchased from them yet so I don't know how their service is, please do at your own risk.