Last year I said that Grids would be huge... in ten years and I still think I'm right. Two more articles that kind of agree with me:
Byte and Switch: Gridding My Teeth
Byte and Switch: Enterprises Still Not Sold on Grid
They say things along the lines that I was trying to say last year. No one is buying it yet. The SDLC isn't there yet to support it. People aren't willing to trust the 3rd party with their data, etc..
Anyway, 9 years and counting.