A few years ago we built a pay-per-click search engine for a larger publisher - it was a lot of fun. We sold to a few (thousand) advertisers, made a few deals some major search engines (you know the type) and soon butchers, bakers and candlestick makers (OK, they were mostly plumbers and builders) were throwing their tools into the air in celebration of all the new leads they were getting to their websites. Everyone was happy and there was much rejoicing.
