Wiki recommendation

[Storm <storm@tux.org>]

Hi,

I need to do some collaboration with a friend and intend to set up an OpenVPN 
connection for him to access a wiki located on one of my servers. Which wiki 
is generally best? I'm looking for something that is simple to maintain and 
simple for collaboration. 

Suggestions?
-- 
--Brad
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Bradley M. Alexander                       |
IA Analyst, SysAdmin, Security Engineer    |   storm [at] tux.org
Debian/GNU Linux Developer                 |   storm [at] debian.org
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RSA 0xC3BCBA91: 3F 0E 26 C1 90 14 AD 0A  C8 9C F0 93 75 A0 01 34
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Why are there flotation devices under plane seats instead of parachute?