Ok, now I'm not suggesting anything as strange as this eBay item, but I've been thinking for a while about alternative value exchange systems like the LETS scheme and others. Shouldn't the Internet have made this much more workable sometime ago? Were we waiting for Web 2.0 to establish the flexible types of glue that a true exchange system needs? Alternatively are we just not interested enough, or already well-served by the US Dollar/Euro and Paypal? Perhaps we're looking in the wrong place and we already have a perfectly good system of attention exchange, built on the foundations of Google Ranking, blog inter-linking and article rating. If so, how do we monetise our assessed value, and more to the point: What's the web now worth?