I regularly get comments about the watermark in my pictures. I choose to add the watermark because I occur costs when making these pictures and I am not going to give highres pictures for free. If you however are a genuine artist, would like to incorporate some of my pics in your artwork or have another proposal that might benefit me I can mail you a high res. In that case send a note via DA or email me at firstname.lastname@example.org
BTW, if you don't have any pictures or other art in your DA profile don't bother to request a high res picture.