Ask HN: Good communities like HN

Hi, I have about 2 months since I joined HN and I'm really excited with the athmosphere and the high-quality discussion and articles we have.

Though, I'm looking for other communities. As you are hackers you may know!

I want communities about general programming discussion, specific discussion... anything related to coding and computers.

An example can be stackoverflow.com (and that's the only community I use with HN)

Thanks!