Re: User activity & ranking
Hades, you look like an "educator" 
(you are very welcome at http://edu.tikiwiki.org )
Yes, this is already coded for an admin in 1.10 since a year ago:
http://doc.tikiwiki.org/tiki-index.php?page=Action+log
And since a week ago ;-), users are allowed to see they own action log, and in the short future, they will be able to see other user's actions log.
Come to edu.tw.o to help us improving tiki for educational scenarios
HTH
Cheers,
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