Thank you for the suggestion and the upvote. I'm curious as to why, though, since I've never been asked that before. I get most of my images from Wikimedia Commons that don't require attribution, or I purchase them from a stock photo company (so that I never violate copyrights), and when I get them from stock photos, it would be strange to link to the source. I don't even think they give you the source in stock photos that I purchase!
I'm unsure of the 'etiquette' on this, so I'd appreciate the tips. Maybe even do an article on it, if it might benefit others.