Always remember the about page
Maybe this is obvious for most people, but I can not stress this enough. You must create an about page and that page must contain actual "about whatever you are" information. Because so many people click on that page it is not even funny. So much traffic went to my about page last month that I thought for 10 minutes that I was under a denial of service attack.
My blog has no real "about me" page because I thought nobody cared. But then I wrote an article that went mainstream and suddenly thousands of people clicked THREE times (blog/homepage/about) just to see my about page. Three freaking read/scan/click actual human events just to figure out who I was.
Also, search engine traffic is up 150 percent on my blog because of that one popular article. You just need to write one page of popular text a month to get several thousand visitors. I guess this is small potatoes for some, but for a developer oriented blog like mine this is huge. The bizarre lesson is that one month of writing may give you more traffic than three years combined simply because you are connected to current search patterns.
Being linked to is not enough. You have to be linked into the current flow of the internet to get real traffic. And this is the real reason why Facebook and Twitter is getting so much hype. Because they are both human spam filters for near real-time information. The social bit is just the "reward factor".
Check out Jan Erik Paulsen on Twitter.