Hi Grant
Headliner.fm was a bit of a learning experience for me too. After my first successful campaign they never reposted my second so I gave up on them. Today they sent me an email that they are ‘rebranding’ themselves. I think they realised that there was too much spam amongst the posts.
Another social media experiment for me is behance.net. I have actually met online film makers and creative people who I ended up collaborating with. I now have more than 600 followers there and I had several requests for music composition from some of them. This one is worth doing I think.
Best,
Krisztian