CAcert's Arbitration Forum
CAcert has a WIP policy [http://svn.cacert.org/CAcert/dispute_resolution.html Rules of Dispute Resolution] which are the defining rules of the Forum, once approved. Also, see the [http://svn.cacert.org/CAcert/RegisteredUserAgreement.html Registered User Agreement] which includes the key clause to agree to Arbitration.
Further Reading
For introductions, try:
Wikipedia on [http://en.wikipedia.org/wiki/Arbitration Arbitration].
International Framework
Arbitration operates to an international framework:
Wikipedia on [http://en.wikipedia.org/wiki/Convention_on_the_Recognition_and_Enforcement_of_Foreign_Arbitral_Awards 1974 New York Convention] on foreign awards.
Wikipedia on [http://en.wikipedia.org/wiki/International_arbitration International aspects] of arbitration, and why it makes sense for a global organisation such as CAcert.
Australian Law -- Choice of Arbitration Clause
Law of NSW, Australia is the choice of law within the agreement, reflecting CAcert's origins. This suggests that reading the Australian and NSW acts on Arbitration is a good start for deep research.
Introduction to [http://www.caslon.com.au/adrprofile1.htm Australian Law on Arbitration]
[http://www.austlii.edu.au/au/legis/cth/consol_act/iaa1974276/ The Arbitration Act of 1974] is the Federal law
[http://www.austlii.edu.au/au/legis/nsw/consol_act/caa1984219/ Commercial Arbitration Act 1984] is NSW law which also applies.
Germany
Book 10 of the german civil process order, see [http://bundesrecht.juris.de/zpo/BJNR005330950.html#BJNR005330950BJNG076503301 Book 10]
Others....
Should research Netherlands, EU model laws, and USA.