1. Click the Gallery link.
  2. Click the Upload link
  3. Use the browse button to select and upload images.
  4. complete the other fields to add keywords or titles and then submit.

Images can be in jpg, gif or png format.
Maximum file size is 500K.
Maximum pixel width is 600 pixels.
Maximum pixel height is 600 pixels.

Generally, images can be saved as medium res jpgs at 600 px with good viewing quality for the web.