Click here to receive the Morning Social Media Newsfeed via email. Twitter Unveils Video-Sharing Service Vine (SocialTimes) As expected, Twitter launched its recently acquired video-tweeting service Vine on Thursday. The mobile app allows users to share six-second videos directly through Twitter. Mashable Currently only available for iOS, Vines are created by pressing and holding your finger down on the screen of your iPhone, iPod touch or iPad. You’re given six seconds of “tape” for your video masterpieces, but you can start and stop recording as many times as you’d like during that ... Read More