In 2010 we started a preliminary AdWords campaign that brought in 1 new hosting client for every £10 spent on ads.
A few weeks ago we redesigned our website and thought we would try the same ad campaign with zero changes.
We've just spent a few hundred pounds on AdSense and had enough clicks, but zero conversions. I don't know if it's because the same advertising keywords we used before have changed or if it's something about the new site design that puts people off (even though it looks considerably better).
So we're looking for someone we could hire on a short-term basis in the near future to act as a consultant or advertising manager (if you're good enough) so we can return to reeling in new clients.