OddDog - 6:19 am on Oct 19, 2010 (gmt 0)
For your plumber try location based search in twitter.
And use certain search terms.
"I need a plumber" or "kitchen sink leaking" and other decent, tightly knitted search term list. Create the rss alerts into your fav reader or email.
@aleski - give it another go. They are just tools for communicating.
Both show the opportunity to sell a plumbers service.