Have you advertised? That's how I got an audience. As for betas, there are many writing communities where you can find writing partners and beta readers. Come take a look at WebLit.Us, which is a community I started for writers of online serials, novels, short stories, essays, memoir and poetry--any non-blog/journalistic writing on the web. We help each other with all this kind of stuff.

Edit: EVERYONE is welcome at WebLit.Us. We do a lot of discussion on crowdfunding etc.