Not having heard of this before, I went looking...
http://www.amazon.com/gp/vine/help
Says
Amazon Vine™ is a program that enables a select group of Amazon customers to post opinions about new and pre-release items to help their fellow customers make educated purchase decisions. Customers are invited to become Amazon Vine™ Voices based on the trust they have earned in the Amazon community for writing accurate and insightful reviews. Amazon provides Amazon Vine™ members with free copies of products that have been submitted to the program by vendors. Amazon does not influence the opinions of Amazon Vine™ members, nor do we modify or edit their reviews.
googling "join Amazon Vines" got me some postings that suggest this is an invitation thing that Amazon does, based on being on the Amazon top reviewers. So to join, just write lots of Amazon reviews...
no subject
http://www.amazon.com/gp/vine/help
Says
Amazon Vine™ is a program that enables a select group of Amazon customers to post opinions about new and pre-release items to help their fellow customers make educated purchase decisions. Customers are invited to become Amazon Vine™ Voices based on the trust they have earned in the Amazon community for writing accurate and insightful reviews. Amazon provides Amazon Vine™ members with free copies of products that have been submitted to the program by vendors. Amazon does not influence the opinions of Amazon Vine™ members, nor do we modify or edit their reviews.
googling "join Amazon Vines" got me some postings that suggest this is an invitation thing that Amazon does, based on being on the Amazon top reviewers. So to join, just write lots of Amazon reviews...
no subject