He should probably do what I do...I just download and save things to my hard drive in a folder called "Cool Stuff". I put everything in there that is a cool image, funny picture, interesting story, etc. That way I offend no one and claim no credit but can look at the stuff whenever I want. If he's using his dad's pc then he could just save the images to a cd for inspiration.

I think the main thing rubbing people wrong was the title of his account...using the word "by" implies authorship. If he had instead used something like "Cool pics I found on the net" then he's not implying that he made them.