I have a couple of financial blogs and I have been looking on a few gadgets like the stock tickers and charts and have realized that some appear with adsense ads in them. Do we get the revenue when someone clicks on these ads.

Things like Loan calculators would be great. Also would it affect the maximum 3 block units on your site as per what Google TOS stipulates?

I would love to know if anyone is earning using these Google Gadgets?