Every week, the LOTRO Store has an item available for free if you enter the coupon code that they provide on their website. This week's free item is one +100% Mark Acquisition (90 min). To get the free item, find the item in the LOTRO Store and use the coupon code MMS74. You can only get one per account with this code, so make sure you buy it as the right character!
Remember: this code is only good until January 30th, so get it now!