That's actually a good idea. If people I follow & respect bookmarked, I would consider paying for it since I am interested in their thought process. Basically

That's actually a good idea. If people I follow & respect bookmarked, I would consider paying for it since I am interested in their thought process. Basically you want to follow their web "foot prints". On the flip side, that's exactly what I use FriendFeed for (to leave my web footprints for anybody who cares to follow), and that's already free. So the technology to follow someone else's web trail already exist in many forms (delicious, FriendFeed), and they are free. So the question becomes: are the thought leaders using it and are they fine with others following them (and will they be ok if those followers are charged?) It becomes a market problem, not a technology problem.