Thank you all of you. and about the suggested improvements: I think it's already nice that I give a choice, I don't want to remind the people 10 times if they want to see ads on their computer. At some point, I have to be realistic
. In fact, if you want to know, my sponsor tried to discourage me to put this option, telling me that nobody would install with the sponsor. Well, a lot of people do (by mistake or not) so it will be kept like that.