I always right click on the picture, select properties, highlight and copy properties. Then paste properties after <img src=" ". Is that the normal way to do it?
I have never had a problem with any pictures, but I can see where someone could trick you.....
I do it the exact same way - its just a matter of being careful of the websites. Some of the people just don't want you posting their pictures. There is a block they can put on it but some just are very sick.
The possible reasons for a "Mr. Yuck" or porno picture instead of what you wanted to link is usually because people don't want their images "hotlinked." Hotlinking means the image loads from their server whenever it's called in a thread on FR. If 10,000 people read the FR thread, their image is called from their server 10,000 times. That can cost them a bit in bandwidth, or even get their site shut down.
In that case, the best thing to do is copy the image to your computer and upload it to another free image hosting service like imageshack.us or others.
In cases of rights-protected images (like Getty Images, some news photos, etc.), best not to post their stuff at all and make more work for the Admin Mod.