Below some feedback I recently sent to moneydashboard.com, a mint.com alternative for the UK.
It would be good if:
Finally, I am still not sure why you chose to build the app in silverlight; I have read the article “Why Silverlight” and although I understand and accept some of the points I still think it puts the app at a huge disadvantage to html. At least fix the following silverlight issues: I can’t scroll using my mouse, crt+a highlights everything, tab doesn’t highlight the new section, you can’t press back or refresh the browser page, can’t copy and paste, textbox doesn’t have scroll bar.. etc
Anyway good first attempt, I hope you choose to iterate quickly, try not to copy the way Microsoft desktop applications look, keep it fast, carefully think about UI and listen to feedback. Cheers, Leonard PS. you really need mouse scroll and copy and paste.