What do you think about Quora?
It does this:
http://webapps.stackexchange.com/questions/43179/how-can-i-r...
And it's officially supported:
https://blog.quora.com/Making-Sharing-Better
But you still need to sign up/in in to casually browse.
>And is this a bad practice?
It's pretty user hostile which is why I personally never used the site.