I’m a big fan of learning from mistakes — whether they be mine or someone else’s. If you are, too, be sure to read these posts:

• What We Wish We Knew When We First Started Blogging - A Series — Darren Rowse is using the collective wisdom of his readership to make a series that will tackle blogging best practices. Some of the content in this series may not be perfectly applicable to corporate/business bloggers, but I’m betting it’ll be a good read as people share lessons learned the hard way.
• Copywriting Maven’s Landing Page Makeover Clinic #1: SEOmoz.org — Roberta Rosenberg dissects the landing page that SEOmoz uses to promote its Premium Membership. I thought the page was pretty good, but Roberta shares some terrific insight while pointing out areas for improvement. It’s essentially a Landing Pages 101 class. Great stuff.