S.A. Tweet Star of the Week: @MAGCONTOUR: The Dolan Twins. Jake Paul. Sam Pottorff. Just some of the most famous lads on social media you’ve probably never heard of. And just some of the savvy YouTubers, Viners and other Internet stars touring with MAGCON, the meet-and-greet convention where fans can snag some selfies and hugs with such young Web wonders.