but sometimes it isn't possible to track the copywrite holder down.
Then you shouldn'tbe using it then.

pot kettle spring to mind.

Your logo stamp has intervened also with copyright law ie you have defaced the photographs of the official photographers work.

I gave you the credit the meer fact I left your site logo on the pic,I was contemplating on removing it but at least I gave people the honour of knowing where it came from.

What you see on the intenet can be had, you cannot protect what is shown and that is fact.
There are three ways to save a picture no matter how you try to protect it.

I'd just like to take the oppertunity to say thank you to the person who scurried to Mathews site and let him know one of his pics has been posted on Yo.