For some perspective:
I think that, for a group of people whose business it is to present things beautifully and clearly, it's pretty important for them to make a beautiful and clear presentation of their own work. So if you want to make something that those same people flock to for the presentation of their work, you have to make that a priority. As it is, you've made a design effort on your site, but it's underwhelming and therefore well below the standards most professionals are going to find acceptable for themselves. The site is also an organizational mess. Is that front page a blog? Is it a truncated portfolio? If it's called showreels.net, why aren't the showreels the number 1 all-important part of that page? Know what I mean? It's poorly considered, overall.
Point is: you're not gonna get much action from people like us until your presentation of our stuff is better than ours would be, and ours is likely pretty good. I would absolutely love to have a place dedicated to sharing this type of content, so here's hoping you really go after it with sincerity.