If you're still around, a better idea would be to include a "total received". I have all the addresses set up for forwarding so that if I catch any of them with bitcoins in them, I'll receive them.
However, it would be cool to see which addresses have received the most over time.
I could do that.
I don't think it would help any.
I've been doing this for so long and I haven't stumbled upon anything, lol.
We have stumbled across empty addresses in the middle of Buttcoins.com & Directory.io.