I certainly don't think you should give up. If this experiment is working, rock on. I've seen some interesting things in your links.
If you were to use the StumbleUpon system (or Magnolia or del.icio.us), most LTH'rs wouldn't see that stuff, unless a critical mass of us started using one of those services.
Maybe we're cluttering your thread with meta-meta commentary. Me, I'm just curious about these various services and many of them are primarily interesting when other people you know use them.
(On the other hand, if you're doing this as much for yourself as anyone else, the browser plugins for all three of the aforementioned make it much easier to casually track links like this than coming to LTH, logging in, finding this thread, and making a post...)
Joe G.
"Whatever may be wrong with the world, at least it has some good things to eat." -- Cowboy Jack Clement