No, it was my bad. I guess I didn't see the angle that registering allows cookies for better browsing.
What I was thinking is that if someone comes along and registers on the forum but then never comes back, deleting the user name frees it up for someone else, and newcomers get an accurate representation of what this forum is: 50-100 regulars, not 8,000 users like some gigantic forum from Apple, MS or Adobe.
I was looking at it like "these people registered and took off"... not, "they registered for more convenient browsing, but weren't looking to post".
My bad.
