I commented on half the items in the list to show why I disagree with such lists. Yes, I've done plenty of link-building but I don't think it gives me any more authority on the subject than the next guy.

What's a more important question: "How do you measure which ranking factors matter more?" or "Have you done a lot of link-building?"

I used to track SERPs for dozens of keywords daily for all my domains (I had a lot then), however I've stopped doing than now as I wasn't getting much out of it. I may try it again in the future but I'm waiting until I get some better ideas on signals to track.