I decided to include advertisments in my homepage. For the time being it'll be only a test for a month or so. Then I will look how much money I've earned via the ads and if there was any feedback from visitors of this homepage and I will decided if I delete the advertisment or not.
I think this little box at the top right isn't very disturbing, because this area was unused and because I included only text links. Blinking GIFs, flash animations and pop-ups are no-gos for me. They disturb me when I'm browsing the web (ok, not any more, because I've got the AdBlock extension for Firefox) and therefore I don't want the users of my homepage being disturbed by such advertisment.