Would it require much coding to have the detailed portion of the "currently visiting"/"who's online" output to a textfile, for the admin to read later? Even admins can't be on 24/7. ;) It would also be helpful to see what users are running into error pages and what not.

i think i possibly may be interested in this hack if it ever came out.

Oh! Oh! I'm interested!

Not been a PHP guru but a Unix scripter couldn't you try and do the follwing.

I know its not very pretty but why not do this to log what you're wanting to know. File could get quite big though

Create the sql file whos_online.sql
Or you could just add a where clause in for certain users if you wanted.

And then cron up to run every min.

Hope this helps.

I'd like this hack for the purpose of stalking my suspitious members and dual username detection :)

A nice user-based centralisation of already avalible admin stats. :)

You could install this mod i've just done

Hope this helps