Finding #8: Starting by sweeping your front door.
Before you agonize about how RESTful your back-end management protocol is, how about you make sure that your management application (the user front-end) is a decent Web application? One with cool URIs, where the back button works, where bookmarks work, where the data is not hidden in some over-encompassing Flash/Silverlight thingy. Just saying.
William Vambenepe's article is as good as advertised (via Tim Bray).