I just created a portfolio on a free iPhone/iPod app named iFolio. It really doesn't do much more than showcasing images, but that very nicely. You can find it right here. Once you have the app you get to see lots of beautiful imagery. I'm sure that my stuff will get lost there, but for now you can find it if you tab on 'new'.
Flattr: After participating on Flattr for one month I counted about 90 clicks on my two Flattr buttons (one is in the New York HDR series). You might be wondering how much they accumulated. I'm looking at a revenue of 33 Euros ($42).