Hi Lorenzo - in my experience blogging can be very frustrating - very hard to get visitors and when they come along they generally don't click on the ads ! Especially in a sector like domaining - one reason is that Google can be a bit of a pain regarding clicks on Adsense ads. and some people (such as me) become a bit paranoid, so I generally don't click on other people's Adsense ads.
The recognized blogging 'guru' is Darren Rowse who runs
www.problogger.net - where you will find a whole load of tips and advice about improving your blog, getting more visitors etc... - but it's still harder than it looks ! Johnchow.com is also an interesting read sometimes - he says himself that he makes money by telling people how much money he makes! He's very good at self-promotion !
If you want to read a wonderful post (by me) about how much money bloggers make havea look here -
http://www.netmonetization.com/2007/07/blogger-revenue-and-alexa-rankings-are.html
I've just been over to your blog and can't leave a comment unless I log in which is a bit of a pain, and it seems you also need a Wordpress account to log in. IMHO you need to make it easy for people to leave comments, so as to create some interaction, although you also need to be able to scan them and dump any spam comments.