Kind of what HN does for ideas/start-up.
I wonder if this also exist for other type of markets (product, music, ...) ...
Please elaborate on that thought!
HN, Reddit, Upbeatapp, Quora (?), are stream-centered. Information come and go, which make it very easy accessible.
Reddit, Upbeatapp, Quora are also sectioned ; There are sub-reddit, there are subgenres in Upbeatapp and in Quora, you can follow topics/interests/questions. HN is not sectioned but is already very specific. That point make an access to your pre-targeted audience.
The two factor combines make an easy accessible access to a large interested audience.
( Note that is not the case in twitter, youtube, soundcloud, tumblr...) I don't know Medium enough to be sure, but I think they are trying to do the same (sections + stream).
I'm trying to find online services that use this pattern for other type of market (Movie, Food recipes, ect.)
Because, If I create an account on Soundcloud, put some awesome music that I created, what will happen ? Nothing. Same for Youtube. I would have to be detected by someone with a huge number of followers to take off.
If I make an awesome post on start-up or about an experience, and I post it and HN, I could go from 0 to lots of good (read "targeted") traffics.
If I make a great anwser on Quora, I could go from nothing to lots of readers.
Not against Quora in anyway, I like it, get traction however you can wherever you can and especially places where people are looking for what you make.