Cheapskates everywhere will be pleased to know that the three Lost Planet multiplayer maps released back in June for 400 MS Points ($5 US) are now available for free (as in no money):

Content: LOST PLANET Multiplayer Maps #3!
Price: Free
Availability: All Xbox LIVE regions
Dash Text: Three unique maps, Lost Technology , Ruins , and Ice Drop , are now available as battlefields for LOST PLANET online!
Size: 232.50 MB

So feel free to blow the dust off of your Lost Planet discs and play a few rounds - after all, if you haven't played it, it's new to you!