The report is in PDF format and 10 pages long. No fluff, straight to the point.
This is not a blogging tutorial, but breezes through key concepts and get to the meat of the matter by the third chapter.
Print the list of 101 Niches for your convenience.
You can get the report by signing up here: http://nicheblogpro.com/free-report-101-blog-niches/
The release is Version 1. I will be releasing version 2 sometime on September.
Feel free to comment below.