I've always had a personal dislike of watermarks - I don't like when I see them when viewing photos, and I have no interest in using them. I agree on Beem's method of relying on metadata and registration...as well as my secondary method which was always to display high quality but smaller size photos on my galleries - max resolution I tend to use is 1024x at the widest measure. This is generally good enough to look nice on a monitor, get the details across, and show the photo well, but too small to make any reasonable print size out of and far below publication standards. I'd rather have clients or periodicals/procurement houses contact me on a photo, and send them high-res originals than post them online where anyone can grab them. At the same time, I'm perfectly fine with anyone deciding to use my photos for some personal use...just not trying to sell it or display it as their own. Keeping the uploads smaller tends to encourage personal sharing/use and discourages theft of property for sale or publication. And it renders watermarks unnecessary for me.