Earlier quoted context omitted.
> then I quit [whatever] because I got addicted to computer websites. I suspect that's where most people reading this site are.
It's a solid step up from WoW.
HN is much more akin to what sports fans do at sports bars (but asynchronous and otherwise more efficient). How much time is "too much time" to spend here depends on what else is going on in your life, but it's definitely not something to shun altogether (like cable TV).
WoW is also very different from TV - I haven't played since high school, but I remember it requiring quite a bit of interpersonal skill to organize and lead 40-man raids: settling people's personal issues, coordinating teams, etc. Maybe I romanticized it (as I did most things in high school), but I'd imagine that the kind of teamwork one learns from being in a large guild doing end-game raids comes in really useful in any organization.