Avoiding linked images in posts with [IMG] and [URL] enabled...

[devolution]

I'm having an issue with people posting some images from smiley sites like SmileyCentral.com - I don't mind the images themselves (as long as they don't take up huge chunks of the post), but these website often have their URL associated with the image and I don't want to link to them in posts.

I have vB code enabled with IMG and URL enabled.

Is there anyway to avoid a URL being associated with an image in vB?

Thanks! :D