Fiverr - Things people do for $5

WOW ! This is most interesting concept for a money making website, I have found lately. I am sure, Fiverr is one of the few newbies which is making money without relying on ad revenue. Take a look at this thrifty web portal, where people post the service they are willing to offer for just 5 bucks. If a customer bids for the service, the provider gets the $4 share one day after providing the service. A buck goes to Fiverr. Cool Idea.
Think about it little more.... The person or a business offering a unique service for $5 get to build his credentials and market his expertise over time. Consumer of the service gets his specific thing done for a price of mini lunch.
You will see serious programming job offered for $5 like these:

and fun and bizarre offering like these:

American economy is service dominated and creating a transparent platform to enable cheapest services delivery sounds like a well thought business idea to me. Its like "craigslist" of services, of course interesting thing is to know how much of these 5 bucks offering turns into real transactions.