Just when I thought I didn't care about Achievements, Xbox Live decides to make them valuable, at least a little bit. Today, Microsoft announced that your Gamerscore can now offer rebates on Xbox Live purchases. If you have a Gamerscore of over 25,000, you will recieve a 2 percent rebate on all Xbox Live purchases, and a 1 percent rebate if you have more that 10,000. Now 2 percent may not seem like much, but considering the fact that Xbox Live uses Microsoft Points instead of dollars, 2% of 1200 might just save you enough to get that new shirt for your avatar that you always wanted. At the very least if you have kept the same account for a long time that number next to your name now has some use.