Firefox users might want to try out an extension called Diigo which lets the user associate different attributes with specific URLs. That means you can create sticky notes, bookmarks and link them to these locations so that you can subsequently tie them together or allow others to view the same associations. You think about it like the child in the fairy tale who leaves a trail of breadcrumbs or if you prefer a GPS user who collects a set of waypoints and can somehow share the data in real time with other GPS users. Try it. It's pretty cool.