As you may notice on the left bar, I have set up a donation button. Why? With the time I spend on this blog, not only writing but also cleaning spam comments, I figure that sooner or later the "lost" time will amount to a publication and the associated merit pay. So, I want to compensate this opportunity cost by allowing user to donate through PayPal. Not that I expect to strike it rich this way. I get personal satisfaction from the blog, so I do not expect complete compensation.
I have had Google ads as well for quite a while now, and they bring only peanuts. I have also had some requests for ads, which I have declined so far because they did not seem appropriate. But that may change.