You probably know that the KDP Select program from Amazon has taken the publishing world by storm. A few BookBuzzr authors asked whether it is OK to use BookBuzzr technologies (particularly excerpts) to market their books enrolled in the KDP Select program.
BookBuzzr spent considerable time researching the issue and arrived at the conclusion that it is perfectly fine to use BookBuzzr technologies. Further, an author has been advised by Amazon support that offering excerpts is allowed.
This blog post provides a detailed analysis of the issue.