We looked into Reddit a while back for advertising. The two main problems we encountered were that much of reddit is the wrong sort of traffic - people that don

We looked into Reddit a while back for advertising. The two main problems we encountered were that much of reddit is the wrong sort of traffic - people that don't convert, people that expect something for nothing and get upset (and vocal) when it doesn't happen and so on. In order to run a successful campaign on reddit it seems you need to engage with the community in the subreddits you're targeting, but engaging with that community can be done without advertising, so the benefit of advertising is somewhat diminished.