Add This social bookmark applet and similar things for adult sites?
 

What's been your experience with using things like the "add this" button or other social bookmarking buttons on your adult blogs/tubes/whatever?

Is it a good way to get exposure/links/etc or would it be a waste of time to go add it to a bunch of sites because people don't publicly declare "hey I like this porn over here"?

Do you add your own blog posts to delicious or is it a waste of time?

Your input is appreciated.