For the last two months I have been working on a Silverlight project hosted on an Azure platform. I have had my challenges with Azure but all things considered I think it is a really good platform. It’s without doubt that I can say my next Silverlight application will be based on the Azure platform as well.
But – there’s one thing that hit me pretty hard. The bill. For the last month I got a bill for 3300 computing hours!!!Windows azure got both a Production and a Staging environment and apparently (and fair enough) I pay for every hour for both environments and for every site I have active. Since then I have suspended all of my Staging environments when not needed.
thomas martinsen 
Just to inform you For some strange and not completely undestandable reason. Azure also charges compute hours for suspended sites…