A week after launching Opinionated, a political magazine exclusively for Amazon’s Kindle eBook, Tribune Media Services, the content syndication and licensing division of Chicago-based Tribune Company, has launched its second Kindle-specific title, this one focused on pop culture.

Tribune has partnered with arts and culture Web site PopMatters.com for the launch of a daily publication.

The magazine, targeting the 18-to-34-year-old demographic, is available for a free 14-day free trial and $1.49 monthly subscription at Amazon.com.

Amazon has not released official sales figures since Kindle's November launch, but the company has had trouble keeping the $399 device in stock, apologizing last month to customers who have had to wait up to six weeks to get one.