http://garden.org/ideas/view/d...
Hugellkultur --building raised beds over salvaged wood is a similar idea. As you can see from Dave's article, there are a lot of advantages to having a wood base under your garden beds--and if you don't have a stump or two handy, you can salvage whatever wood scraps, branches, and logs you get in pruning and land clearing around your yard. Recycle the biomass!
Good idea, Horntoad.