It's a shame to have so much great information on archaeology "buried", so I made a shortcut list to all 28 archaeology guides, organized by order of appearance. Dig in!
Epic (Winner):
Archaeology - And all its dusty little secrets! by Jinze
Rare:
Archaeology Guide - Tips From the Trenches by Emeralde
Archaeology: Surveying Epics by Noctum-damus
Archaeology - Farming Tol'Vir Fragments as Fast as Possible by Izuria
Uncommon:
Archaelogy and You: Raiders of the Zin'rokh by Ettin
Q's Archaeology by Qwetz
A Digger's Grind - Archaeology Detailed by naecroknight
Professor Zenuk's Archaeology Guide by saidiecat
Digger, Diggerer, Diggerest: Archaeology by RenataKane
Konijnen's Archaeology Guide by konijnen
Archaeology Guide: WoWDigSite.com by uriahworld
Delthal's Archaeology Guide by Delthal
Archaelogy 101: Following in the Footsteps of Harrison Jones by Graega
Mostly Complete Guide to Archaeology by Tigerlord
Archaelogy and You! by Khana
Archaeology Compendium by Alitia
Archaeology: So You Think You Can Dig? by Drane
Archaeology for Dummies by Worpig
Archaeology at Level 85 by hanlatra
Raugnaut's Guide to Archaeology by Raugnaut
Hellfrost's Archaeology Guide by Tealgod
Archaeology 101 by ub3rjmw
Archaeology by abbzow
Tinking Leylines Presents: A Guide to Archaeology by Tinkery
The Complete Guide to Mastering Archaeology! by borntoheal
Archaeology Guide - Optimal Leveling and Rare-Finding by daevric
Archaeology Guide by Alison
How to: Archaeology by dakoeda