I'm not sure about that either. (How helpful am I!
)
The software originally called all bots guests, but then there was an upgrade that recognized Google, etc as bots. For all I know, though, there's a "new bot in town" that isn't being recognized as such. And, besides the fact that I don't think they update this software anymore, Matthew has changed it too much to be able to upgrade.
Matthew might know as he looks at the stats from time to time, but I wouldn't imagine there'd be much difference between an avid lurker and a not-so-thorough bot.
Maybe this post which basically says I know nothing will get his attention. :read-paper: