Best Adsense Technique

I would like to share my adsense technique with everyone here… Its simple
i create free blogspot blogs on interested topics and place adsense on it. I do all free promotions for each blogspot blog. By this i can analyze which blog works well with adsesne and convert it into direct domain and build a new blog using wordpress. I redirect the blogspot blog to my new wordpress blog.
For example
aletterformat.com (previously letter-formats.blogpsot.com)
aresumeformat.com (previously downloadresumes.blogpsot.com)
collegeprojects.info (previously projectscollege.blogspot.com)
This trick is working well for me and my blogspot blogs gets indexed in google and that way i get instant traffic to my new wordpress blogs