Bukkit

I have a suggestion that has seemed like a cool idea for a while now. A command that would add up all the players' OnTime and spit out a number. I think it'd be pretty cool to see how much time the players have truly spent on the server overall. There may be a way to manipulate the current commands to produce this, but not from what I have found. I also can imagine (especially with MySQL) that this would be an extremely laggy command to have, so it might cache the time for a specified time, similar to how /baltop works. Along with that I, personally, would only really want it to be for admins/myself. I think it'd be pretty cool to say to our players, "In total there has been 4 years 2 months and 27 days spent on the server!" or something along that line.