Media are Magazine Editor, Blug curators, Playlist curators, Radio A&R, Facebook Page Curators, influencers etc.. and each one of them can feature your Submission in a different way and accordingly to his “core business”. 

A support may mean, for an editor to write an article about the Submission, for a youtuber, to use the song as soundtrack of his video, for a blogger to post about the Submission, etc… 

You have to carefully check out the credentials, the social links and the profile of the Media you want to send your Submission to!