There is a streaming platform out there, focused on games, called twitch.tv. I am streaming my favourite game there (League of Legends), but it isn't that exciting when not many people are watching. I try to interact as much with my viewers as possible and talk to them and answer immediately.

I also have a Facebook and Twitter link I advertise from time to time, but unfortunately it takes pretty long to get a larger community that follows, views and wants to interact in some kind of way with my chat.

How can I get a bigger community and hold it eventually?

I know that the viewer/follower count is also somewhat based on my stream quality, but I think one can raise the count based on advertisement or proper engagement with the community as well.