In part yes. You can seed, on servers or desktop computers you control, any content posted to #bitvid. Simply open a video and copy the #magnet link. You can then paste this link right into #WebTorrent desktop app to support the distribution of that content.
I hope to enable seeding content by public key so you can support creators automatically by seeding anything they post.
At the moment, building a reliable and functional client is my first priority.