It looks like everybody earn from:
1-signature campaigns
2-faucets
3-gambling & dice sites
I don't see anyone who offers service and get paid for a long time.
Well, due to the nature of the internet, we can't really offer services and get paid for it over long periods of time. Sure you can develop websites and write articles, but most of the time people aren't interested in long-time contracts, for various reasons.
If we used Bitcoin more in everyday life, I can see people getting paid for longer periods of time.