Eregar over on www.wow-ni.com
has been working on a stress test beta journal since the stress test started. Over the last two days he has added two very good reads regarding the Wailing Cavers instance dungeon and his exploration of it. The Articles can be found here:
Wailing Caverns and Group make up
Wailing Caverns (Updated + Screenshots)
Both are well worth the read, and the visit over to their site.