I found out that it is illegal to post picture's that are not yours without asking permission, if you don't, it is considered "stealing", and that is because of copyright laws.

In some cases, it doesn't really count. When posing in the "I search an object" thread, for example. Really, that only applies to copyrighted pictures or photos. Don't worry.

Thanks, alex, the copyright laws got me worried.

I think most people are relaxed about it until it's clear one is making money from someone else's images. That's when it becomes a problem.