To select and delete multiple stickies:
Press and Hold the Shift key and click on a blank area on the Storm and drag the cursor to select as many stickies as you like (the selected sticky notes will be highlighted in blue).
A new menu will appear next to your cursor. It will show you the number of stickies you selected and it will give you different options.
Select Delete.
4. A new menu will pop to confirm you want to delete the selected stickies. Click OK.