Content is indeed king and a good solid interactive community is probably considered the backbone of a blog's success. I believe this to be true more than ever, thanks to your post. Going slightly off-topic here...caught your review on John Chow. Great job on that one, too. :)
There could never be enough sources for good blogging tips. I frequently read John Chow and Problogger, but it's good to know about other helpful sites, too.
Sadly, I'm not as computer-savvy as some people think. PC Pitstop has been a really helpful source for all my hardware and software queries. Looks like the Major Geeks forum may come in handy, too, someday.