Do you think that putting ads on a professional service website is a good thing? I don't really know what to think about it. On one side, you can get some decent clicks, but on the other hand, it seems to me that you remove that professional touch to it (like chasing the little cents where your business should provide huge dollars), plus you can potentially promote the competition. Just like to know what you think about it.
I believe it's not a good thing. Your money should come from different source, business you are promoting. Your goal is not to lose a visitor, you want to sell him your own stuff.