Following the launch of Opinionated in late March, a political magazine exclusively for Amazon's Kindle eBook, Tribune Media Services has launched its second Kindle-specific title.

The content syndication and licensing unit of Tribune Company has partnered with arts and culture site PopMatters.com for the launch of the pop culture focused daily publication.

The magazine, targeting people between ages 18 and 34, is available for a 14-day free trial, and then will charge a $1.49 monthly subscription at Amazon.com.

Amazon has not revealed its official sales since Kindle's launch in November 2007. However, the company has had trouble keeping the device in stock, and it apologised last month to customers who have had to wait up to six weeks to get one, according to Folio.