There's a great discussion going on at Jason McIntyre's blog. Indie writers should weigh in.
Also, several Smashwords authors whose Features are pending got good press at Indie Mega Seller and blogger extraordinaire Joe Konrath at http://jakonrath.blogspot.com/2010/11/with-little-help.html
I pity the fool who doesn't read his blog! dead man walking!
If you want to sell books, read Konrath. If you want to talk about what happens when you don't sell, check out Jason. If you want to argue with me, you have to buy the beer.