I Doubt Anyone's Keeping Track.

There is all sorts of information that no one is keeping track of.  For a lot of it there probably isn't a practical way of doing so.  One example is the average life span of a webcomic.  Anyone who has read more than a couple has been a reader of a series that has gone silent, or stumbled across one after it has.  Long running series like Questionable Content must keep the number higher that it might, given that a lot of webcomics make it a year, or less, before the creators realise they're in over their heads, or lose interest.