I find it so weird that I remember these things. I also remember the static IP address assigned to my freshman year dorm in 1999 (we all got static publicly-routable IPs). And I remember my ICQ number as well.
If our brains have a finite amount of space for memory, I really would not mind dumping some of these silly numbers in favor of something more useful and current.
What was the comma for (and dot for email of course) - just to break it up? Was it a checksum or some sort?
Ziff Davis owned the 72241 set of IDs. Bill Machrone was 72241,10.
(I was lead sysop of the ZD Executives Online forum and backup sysop of the Computer Shopper forum.)
Also it took everybody forever to realize everything on CompuServe was octal.