Yahoo! SmartSort

Yahoo! is doing some interesting things with its SmartSort, a new product browsing interface allowing multiple sorting options. Seems like a great way to filter out products that you don't want and match the needs you do have. I felt like it could go even further to help you filter out what you don't want. Since they have data on specifications for PDAs (e.g. OS), why not have a sorting option for other features as well? For instance, I'm curious about wireless (BlueTooth and WiFi) options. Why not add that in? Very nice, nonetheless.