Turbine wants you to try out their my.lotro community site, and as a result, they have announced a new LOTRO Lottery to encourage players to get involved! The lottery can be entered by clicking on the lottery widget on the left-hand column after logging into the site with your community login details. Once you've clicked on the widget you'll be able to enter your characters into any applicable drawings.
This brings up another point. You are only entering your characters in these drawings -- the items won are in-game items only, and the rewards will vary. The rewards will be issued through in-game mail, and their contents may be determined by a number of variables, including the winning character's class, level, race, etc.
The lottery is still in beta, and in order to give the system a spin the first drawing will be for a bundle of fireworks and an appropriate amount of silver commensurate with the winning character's level.
Do note that this feature is only available to North American players. I know, I know, I feel for you guys across the pond!
Get more information on the LOTRO Lottery here.