Watermarks

[sim]

Jimmy and other web gurus,

Not sure about where to put this question, so I thought I'd try R/C Graphy since it's related to pictures.

I've been thinking about putting watermarks on the pictures on my site at http://www.bigbigplanet.com and I'm wondering what's a good way of going about doing it? Is there an easy way or am I going to have to open each file with a photo editing program like Adobe Photoshop?

Jimmy, I just had a look at your review pictures and I only just noticed you only watermark some of the pictures. How do you choose which one to do and which ones not to do?

If I'm using the word watermark wrongly, please forgive the newbieness.

Thanks in advance!

Sim