I'm very sorry about it, I too very much dislike having big ugly watermarks all over the paintings (and yours are truly great btw).

It's a bit odd though, that someone who apparantly liked your piece enough to share it, still actually took the time to remove your watermark.

In the lower right corner, I noticed there is a tiiiiiny tiny text saying "source" linking to you, but still many asked "who's the artist" etc in the comments..

I do hope I do hope this won't happen to you again, keep up the great work!