Adsense can be used on any type of blog, as long as it has some traffic. Whether you have 20 visitors a day, or like I said above 100 visitors a day, Adsense could become the key to your income. (and of course if you have more than 100 visitors.) To use Adsense more efficiently make sure you choose a color scheme that blends in to your website, this won't annoy readers, and maybe a visitor will accidentally click on it. Another way to optimize your Adsense ads is to put more than just text ads, adding referral ads gives you the opportunity to make $1-$3 for every referral.
Aside from Adsense another successful form of making money with your blog is selling private ad space. For example, putting 3 125x125 ads on the sidebar of your page gives you the opportunity to make you $30.(depending on how much traffic your website has.) This is were Adsense, and private ad sales differ. With Adsense traffic matters, but not as much as private ad sales. If an advertiser were to come to a site and see that they only get 20 visitors a day he may not be as interested in buying ad space. On the other hand Adsense is dependant on traffic, but not to the same extent. With Adsense you can average 20 visitors a day but still manage to make money, because visitors will see the ads and, if they are relevant to your site, they may click on it.
There are numerous other ways to make money with a blog, so look forward to me making a list of ways to make money with a blog.
