I'm looking for a forum where I can ask questions about networking, security, coding, operating systems, web design, etc. There are many of these out there, but I'd like to find a single community which covers all these topics more or less equally (so it isn't a Linux forum with a small section on BSD, or a coding forum with a small section on networking). I'd like it to be the sort of forum where users stay around for several years as they learn and contribute at different levels, with high literacy and education-to-spam levels. Could I have your recommendations please?