Many months ago, I asked my readers to send me pictures of people who mattered, who made a difference–people they couldn't live without. The result of that shout out is now published on the inside cover of my new book.

If you didn't get your picture in on time, you can post it, along with a description, links, guest books and more at whoisthelinchpin.com. Even better, post someone else. It's a nice thing to do for someone who matters to you.

Celebrate the linchpins. We need more of them.