Not really. I know of at least 5 different websites that all I gotta do is paste in the link and voila. Done in less than 3 seconds.

Definitely! I hated that on FA. XD

Honestly, I don't see the point. As many have said, if someone wants your image, they'll get it one way or another. Heck, you can also just screencap it too.

Just in general, I love shouts. I love to just pop in and say 'thanks for the fave/watch' or let an artist know in public that I love their stuff.