Well, they’re not secret any longer, but I suspect they’re still valid. Sounds simple and you hear them everywhere, but they’re really hard to put into practice.
For most people, the hardest parts are focusing and finding a hungry market. I certainly struggled (and sometimes continue to struggle) with both those components. I always kept thinking of new directions. And I’ve certainly created products that people didn’t want.
The one secret that’s missing: Secret #8: Every Internet millionaire either studied copywriting or hired someone and paid handsomely for copywriting services. Just ask anyone.