I thought it would be interesting to compare the worldwide Amazon DSLR sales rankings. Please keep in mind that in every country you have different deals. Amazon is also not very popular in Europe and Japan like it is in US. I will show you the TOP 5 DSLR + the 5 most sold Panasonic and Olympus cameras
If you compare the rankings you can notice that:
1) Only Amazon Japan has a Panasonic/Olympus which is in the TOP 5 (On first place the white GF1+20mm lens)
2) In Germany FourThirds cameras are very popular.
3) Olympus E-PL1 preorders are quite low.
Click on the camera name to jump to the amazon camera page