How can we improve Lavalite?

Reddit Link Question

Hi folks,

A friend of mine said that he once had a link posted on Reddit, and a week later his site saw a spike in traffic. I don’t quite understand how it works — Reddit isn’t a commercial platform. But it seems like these “social” backlinks have some kind of impact. Searching for similar topics on your own is a quest. How do you find such platforms without burning down your domain?