Hi @Redouanemez
You bring some good thoughts and advices for thoes who are trying to do business online.
I have also used all of your 4 techniques before when I was working with another product and can confess that this is working. I got a good hang of how to optimize Adsense and that gave me realy good results.

Kindest regards
@Gyldenhorn
for
@Onebitnews