Now that I've got the major features for BottomFeeder 4.0 packed away, I've got another task coming up on my plate - comment registration for the Silt server. I'd like to run this as follows:

• Continue to allow anonymous comments, but such comments will go through the fuill spam check gauntlet
• Add Registration, where anyone who registers and then logs in can comment without the full spam check

The main question is this - should registration be site wide, or blog specific? I'm still pondering that one.