http://my.desktopnexus.com/dgajjar/

to desktopnexus.com I found some of mine. Take a look for any of yours/ others you might recognize. The site seems to have a process for generating takedown notices so might be worth our while reporting the violations.

Thanks Microbius.  Sent a DMCA and posted a (perhaps I should have waited a beat) comment on the photo.

It's hard to find your own work on these places without spending an entire day looking for it though.