I've been making some good bank with this for a few weeks now, so thought it time to spread the love It may not work for all, but works very well in some niches - like mine, travel. I'm targetting searches for phone numbers - eg "phone number for my competitor" , "phone number for travel company". The ad cost is generally 1-4c and there is zero competition - every ad comes out on top. It's giving me some good targeted ready to buy customers. Customers who think they are calling my competitors. I'm directing them to a page on my site about the individual product - of which I have included my phone number in the page description. It's not giving me the highest clickthru - but our phonesales have gone through the roof. And yes I know that I could simply optimise and market a page to do the same thing - but at 1-4c a click (when it's the impressions that are making money anyhow) why waste your time. By the way I run an online travel agancy, but maybe this can work for other niches.