That happend to me also. Art gave me this link: http://www.htaccesstools.com/

I used this one: http://www.htaccesstools.com/block-hitbots/ and just typed in the domain that had linked to my site and put in a sponsor hosted gallery in the redirection field and put it in my htaccess file. Worked excellent - transfered the traffic right to the sponsor gallery. After two days all the linking to my stuff using that type was gone.