I really liked the part about everything scaling. I hate when people say, "It wouldn't have scaled." It would have. You just weren't thinking of it in the right way.
This is solid advice: "You need to find the balance between what you're giving away and the barrier to getting it." It's a common mistake to overlook this.
Honestly, I think it's a given that web personalization is deeply rooted in A/B testing. But instead of testing for what's best for the aggregate, you're testing for what's best for each individual.
This reminds me of the saying: "Never compare your beginning to someone else's middle." It's never too late to start, so it's never too late to be awesome.
"If you decide to raise the price, you can grandfather in all of your existing customers, and if you decide to lower it, you can give them all the new price."
Not doing this is one of the biggest mistakes companies can make re: pricing.
I really liked this post and completely agree with the message. We tend to equate each year of experience with "getting better". That's just not always the case. It has to be deliberate. You have to be curious!