If I use Windows Live SkyDrive (skydrive.live.com) to upload pictures, the dialog box rcvd for Firefox does not allow Drag and Drop, whereas if I use IE it does allow Drag and Drop. The firefox dialog box simply says 'Select photos from your computer" and if you click on the link it takes you to an explorer window to make your selection. The IE dialog box says "Drop photos here or select photos from your computer", which is a much better choice. What really makes this problem difficult is if when using Firefox you add photos during the creation of the folder, you get the choice to Drag and Drop as well as select photos, but if you either add 200 photos initially (the per session maximum), and try to add photos to the same folder later, you don't get the option to Drag and Drop. Also, if you don't add photos initially, and then try to add photos, again no choice to drag and drop. IE will allow Drag and Drop in all cases.