I see that you have an option to not include a watermark on downloaded images, but having watermarks turned on by default (especially since these look like user uploaded images which I'm assuming you don't actually own) is quite off-putting.
Thank you for pointing this out, we will fix it ASAP!
I was going to say that the watermark is too obtrusive ... I don't have a problem with you getting a bit of attention in exchange for the time it takes to curate the collection but it's too big and in a bad spot.