Here are my current 3 picks.
1. The Reverse Job Board
The mini pitch: “Buy and sell work online.”
What it is: You know all those job boards you see littered around the web? This is a job board flipped on its head. Think of it as a “work wanted” board. Instead of employers posting job offers, this is a place for service providers to post requests for work.
How it works: Designers, developers, writers, and anyone else wanting work can post their request, together with the percentage or fixed fee they’d pay to someone providing a lead.
Why it’s hot: More people than ever are turning to the web as a source of work. Sometimes it’s very hard to find it, or very time-consuming to browse offers and make pitches. Wouldn’t it be great if people could find work for you? And imagine getting paid just for referring someone you know who needs a new website or logo design.
Where the money is: Take a commission when work is successfully placed, or charge a monthly fee to either buy requests or see contact details.
2. Live Auction Sites
The mini pitch: “Buy it now on steroids.”
What it is: Online auction sites are great, but few of them capture the same adrenalin rush and buzz that you get from a real auction room. I think there’s still space for a well-executed live auction site that makes listing and bidding super-simple.
How it works: Imagine a list of iPhones for sale — you can only bid on the one at the top, and it’s only available for minutes instead of days. Bids are live and backed by escrow, and when the top item’s been sold, the ones below float upwards and a new item becomes active and open to bids.
Why it’s hot: As a seller, it’s becoming increasingly complicated to list things online, generate buzz, and make a quick sale. A simple live online auction site could solve all that.
Where the money is: Make it free to list and just charge a commission for successful sales. You need to think carefully about how you’ll guarantee that all bids (and items!) are genuine. This could be by asking users to deposit funds into their account prior to bidding, or some other way.
3. Website Sales
The mini pitch: “The place to buy and sell websites.”
What it is: If you’ve got an established website to sell, where do you go? There is still no clear-cut market leader in this field. What’s stopping you from filling that gap?
How it works: List your website for sale at either a flat fee or auction rate. Include screenshots, traffic, pagerank and earnings info and watch the money roll in!
Why it’s hot: Domain name sales are big business. But selling a website for what it’s really worth, or buying an online property in a trusted way is still rather tricky.
Where the money is: Take a commission from successful sales in return for offering escrow and listing services, or charge for each listing.
source: http://www.dailybits.com/11-undiscovered-website-ideas-to-st...