Many people aren’t happy at looking into watermarked pics.
And personally I think visible watermark is and always will be not the best idea. Photos or images don’t become better and sometimes watermark is awful or just boring.
So why do we build a service that lets you to add watermark?
Well take a look at this story:
Someone decided to make a profit out of vicarious work
and uploaded photos to stock image website.
It is awful.
So if you make good shots and if you’re a good photographer - be careful.
You would never know if your photos will be illegaly selling somewhere.
The good solution is to use any of available watermarknig tools.
There’re a lot of software for Windows and Mac - the most of them are shareware.
And there is PicMarkr - a free online watermarking tool.