From ProBlogger:

If I’d thought ahead a little, I would have realized that stuff like a wiki, forum, job board, etc., would all be a good fit, and that I’d better build out around the idea that the highest value for readers would be in having those pieces work well together — seamlessly, in context, and very much not like a blog plus a few strap-on subdomains.

What would I do different if I had to start my blog over? – Merlin Mann>>