Tumblr adds 'Buy', 'Pledge', or 'Get Involved' options to related posts on site

IBNLiveTumblr adds 'Buy', 'Pledge', or 'Get Involved' options to related posts on siteIBNLiveWith an update to its application for iOS and Android, Tumblr will automatically show buttons to 'Buy', 'Pledge', or 'Get Involved' for posts that link to crowdfunding or related sites. The buttons will appear at the bottom of the post as well as on ...