Why Google Rejecting Application from Bloggers?
It was the situations upto 2008 Google Adsense was accepting all the applications from even free Bloggers such as www.accountsguy.blogspot.in. But most of the free Blogger Publishers were misusing the opportunity by deceiving the Google Adsense such as auto clicking events. It became against policies of Google Adsense. Since then Google started to reject the applications from the Blogger sites.
How Google Adsense Team come to know that i have Blogger?
Google Adsense simply rejects the applications from the Blogger sites such as www.blogger.com, www.wordpress.com, http://www.joomla.in, There are so many websites servers are providing this kind of free website designing services to its members. If you create a website under that site it will be created as sub-domain name such as www.accountsguy.blogspot.com, So, accountsguy website name is ending with blogspot.com. Google Adsense accepts the applications form the top level domain names such www.AccountsGuy.Net not of sub-domain websites.
Why Google Adsense does not consider Newly Launched Websites?
Because the newly launched websites doesn't contain much content(information) on it. Google Adsense expects the visitors for your site. what the visitors expect from your site? information or services! So, It takes some time to add some content and to bring the visitors.