Anti-spam and Friend Management App's need a way to sort by Follow Date

There are a couple of great applications out there for managing your friends and followers: Your Twitter Karma (http://dossy.org/twitter/karma) and Twerp Scan (http://twerpscan.com). However, there is one key feature that is missing from both of these app's: the ability to sort the Followers by the date that they started following you. This is a big deal for anyone who is following more than a few dozen people. From what I can gather, the reason that this feature is not available on these two great tools is that there is no "Follow Date" timestamp available via the Twitter API.

Here is a related thread on the Twitter Developer discussion group:
http://groups.google.com/group/twitte...

There hasn't been much activity on that thread since late-February. It's understandable that Twitter has other important things to work on (stability!) but I hope this request doesn't fall off the radar.

Having this timestamp available would open the door for all kinds of great tools for managing New Followers. For example, you could run Twerp Scan or Your Twitter Karma and sort the list by Follow Date in descending order. If I had this, I could finally turn off my New Follower email notification and still have a way to stay on top of who has recently followed me.