That's what I'm talking about Suzanne, I still can't get rid of some of the watermarks on a few thumbnails. I have re uploaded, refreshed and still there. No matter though, it's just a few.
As far as signatures on photographs, I love a pencil signature on the mat with the name of the photo there too. Since there is no mat to sign, I like the photo to be signed with the photographers name. Don't use a sharpie though, use an archival pen. That's just my opinion though.
I am a watercolorist. I sign my paintings, sometimes in ink and sometimes in pencil, right on the painting. I like it to be small and inconspicuous.