[ODE] spam on wiki area page?

[Russ Smith]

> go ahead and fix that - it is an automated chinese spam bot that walks
> through sites - i noticed another wiki in the area was hit by that.

looking at the change logs, looks like the wiki is under constant
attack, and people are continuously reverting it. this is unsustainable.
any suggestions for good wiki software with security features to stop
the bots? e.g.:
	* must type in the random letters shown in an image to make changes
	* must enter your ode list email to make changes
	* other?

russ.

-- 
Russell Smith
http://www.q12.org