Dude, I'll put it as clearly as I can.
Hotlinking is illegal, for all the reasons listed above by Ipstenu, Andrea_r, and esmi. Don't do it. Period.
Stealing images from other sites and reusing them without permission is also illegal. I'm a photographer, and get very angry when I find my images being used without my permission. I'm not the only photographer who feels that way, and some get very vindictive when they catch someone. So don't do that either.
If you find an image you would like to use, contact the website owner and ask them if it is their image and, if so, would they mind if you used it on your site. Follow whatever conditions they give you for reuse if they agree. If they don't agree, then look somewhere else.
Copyright infringement complaints directed to your host can/will get your site yanked offline and your hosting account suspended/terminated. And yes, you can also get sued. Wikipedia is not the end-all/be-all for legal advice.
Stop playing word games. You asked for advice and you've been given said advice from some smart people. Now follow it.