well done to whoever thought of this one. I didn't get it at first -- but then it dawned on me how useful this is -- each time you click on it you get only changes you haven't seen yet. the best thing is this: when you sign off from the pedia, go to your open RC page, and drag that link up to the bookmarks bar. You now have a link to pick up exactly where you left off ready for next time you log on.
cool stuff! :-)