My question has two parts:
1) Can any image be used as a placeholder? I am developing a card game and would eventually like to put it on Kickstarter, but neither I nor my coworker are artists. I understand that I can use traditional placeholders (or just black images), but I was wondering what the hard and fast rule is for a placeholder image. What constitutes a placeholder? Can I use any image for demoing and prototyping as long as I (obviously) don't use it for production or profit? Or do I have to stick with generic images?
2) When we actually start looking for artists to illustrate equipment, lanscapes, creatures, etc, how should we go about it? I had originally intended to run a contest on DeviantArt and see what kind of talent surfaces, but I don't know what artists are generally attracted to, much less where to go to find them. Where are some good places to start looking? What are some good ways to attract artists? What is the likely going rate for 2-3 square inches of art? Additionally, when should we practically concern ourselves with looking for actual art?
I know that there's a lot of questions here, but I've picked up a few of them while I've been trolling the internet for answers. If anyone can link me to acceptable answers or answer any of these questions themselves, I'd be very appreciative.
Also, let me know if I can clarify any of these questions.