Crawford of Gorefiend posted a pretty amusing post recently on the official forums: Dalaran Classified Ads. The post lists a variety of help wanted, services offered, and even personals ads from various personalities around Azeroth. There's some pretty amusing ones in the mix.
Inspired, I thought I'd come up with one or two myself:
HELP WANTED: Day Laborers for bridge construction. Must bring own tools, or recover stolen tools from Murlocs. Payment is 2 armor patches a week plus all the Sauteed Sunfish you can eat. Work hours very flexible. Contact Oslow at Lakeshire, Redridge. Projected completion time TBA.
It's not that great, admittedly, but hey. For some real good ones, check out the post.