Depends on what your skills are. Most of the popular blog websites have a team of writers working remotely. Then there are the design, development and SEO types who have a lot of remote work.
As a redditor for more than two years, I think reddit gold is truly the most honest and sustainable way to make money off the site that is purely user-generated. We have seen how communities like Twitter and Facebook have responded to sites being taken over by ads. Also, as someone who has worked on social media advertising, they do not have as much returns as Adwords or other forms of PPC. Consequently, I see those advertising models die off as social media matures.
Reddit has intelligently put the onus of making money on the users. And letting people upvote people with gold, they have intelligently integrated the community feature with monetization which I feel is really sustainable.