This tip is easy: make it easy to get ahold of you. Especially if you ever want something nice to happen to you. I've been trying to get ahold of bloggers lately to do various things with them (and even hire some of them) and often it's hard to find a way to contact the blogger.
On my blog I put my cell phone number so people can get ahold of me. One Saturday afternoon I was at mini golf with my family and I get a call.
"Hello, is this Robert Scoble?"
"Hi, I'm the design producer for ABC's Extreme Home Makeover show."
See, you never know who wants to get ahold of you. How they'll change your business. How they'll change your career. But you'll never know if you don't have at least an email address on your blog. And, as ABC's producer shows, some people just don't have time to wait for email, so a phone number is helpful.
Amazingly in years of having my cell phone out in public I've only gotten a couple of crank calls and I've made a lot of friends and made great business relationships that continue to pay off.