I had thought it was all about traffic?

My blogging project is chugging along nicely so far and has sort of met my expectations so far. Modest traffic and some earnings, while learning a bit about how it all works and getting my brain around the ways of the web. So far so good I was thinking, and was also beginning to settle into that slightly smug feeling you get when everything is under control and going according to plan. Then yesterday something shook me out of that mind set. I had thought, its all about traffic isn't it. Spot the niches that generate traffic, optimise to pull in eyeballs then work out how to turn that traffic into income. Well over June I was pulling in steady adsense revenue, 10-30p a day and with an upward trend. Just what I was expecting basically. But yesterday I had a quite normal day in terms of traffic and number of people clicking. But for some reason adsense rewarded me out of all proportion. I pulled in a well over £1. If anything, yesterday was one of my lower days traffic-wise. This has really got me thinking. If I can get the return per click up by 250% just like that, maybe I should give more attention to what adverts I am attracting than I have. It might be much more valuable than chasing that which simply generates a lot of visits to my sites. I need to go back to Google Analytics and see what analysis tools are available to work out not just where my visitors are coming from, but what is the most lucrative thing I can do with them once I get them. Having said that, I mustn't lose sight of the goal of having other income sources than Adsense. I love the ease with which Adsense allows you to make money from a blog but especially for the locally orientated blogs I really need to sell direct advertising space to businesses. Quite apart from the financial considerations, I think if I am to be able to look myself in the eye and think that I am a professional blogger, albeit a part-time one, I have to have proper customers who pay me via an invoice because they value the service I am offering them.