What are some good internet forums?

You're looking at it, the rest is a reminder that forum culture is dead.

A lot of 'chan' s fly under the radar and the less trafficked ones actually have some solid information. I'd recommend lainchan if you're into technology.

I've visited plenty of other internet forums that are still around to this day, but they are only made for specific topics. There are still active forums for many topics you may be interested in such as optical discs (for example).