I didn't realise that I was being shadowed !
Update: FC Now has the lowdown on Shadows, a new community-search product from the folks at Pluck.
The dream behind Shadows: let humans index the Web, allowing smarter, quicker searches and creating impromptu forums and on-the-fly blogs. You see something, you like it, you tag it. By leaving tags with keywords and opinions, not only are sites easier for you to find later, but they boost the relevance of the site for all users, creating a community memory (of sorts).
Ok then, go ahead, shadow me !