I guess they're not copyrighted, but I guess that feature is in place so this server doesn't get overloaded with requests from somewhere else.
You can save the image to your computer, then upload it to an image host (like photobucket, or tinypic) and then you can use the link they give you anywhere on the web.
You can save the image to your computer, then upload it to an image host (like photobucket, or tinypic) and then you can use the link they give you anywhere on the web.