Here's some notes I took, about the XML realm status page, which is parsed by an XSL stylesheet.

[pre]http://www.worldofwarcraft.com/realmstatus/status.xml

Example:
Tag:        <r n="Aegwynn" t="2" s="1" l="1"/>
Name:      Aegwynn
Type:      PVP
Status:    Up
Population: Low


Tag: RS
-- Contains R tags.

Tag: R
-- Param: N - NAME
-- Param: T - TYPE
-- -- 1    - Normal
-- -- 2    - PVP
-- -- 3    - RP
-- -- 4    - RP-PVP
-- Param: S - STATUS
-- -- 1    - Up
-- -- ELSE  - Down
-- Param: L - POPULATION
-- -- 1    - Low
-- -- 2    - Medium
-- -- 3    - High
-- -- 4    - Full (Queued)[/pre]