Just letting you all know. I recently put up http://findabusiness.org which acts as a online/offline business data tool. At first I figured it would pay out relatively well seeing as it's a business niche with many many different types of b2b ads on the data page. I was thinking something along the lines of 50c per click but at the moment I'm receiving approximately $1-$1.30 per click, might be something to think about when developing your next website.
Nice one Expect some added competition from now on, since you've given away your keyword. Then again, it is pretty obvious that this keyword would pay rather high, since any business related term is typically high paying. I just found my own keyword, which is paying $2/click, with almost no competition. It's a little goldmine. It's always good to find that your keywords are working well for you. Enjoy the clicks