This advice is right on the money. I've spent decades developing at a number of startups (including playing the founder at some), but I have preferred to keep a low profile. As a result I believe it has limited my opportunities.<p>That changed for me six months ago. I started a blog and have been speaking at conferences. All of the sudden I'm a hot commodity. Its a tough time to be introverted with your career.
There's a period of time which is beneficial. It's not about being secretive, it's about putting your head down and getting things done without interruption.<p>Five years is (in virtually any case) way longer than that should be. But three months? Great! Even a year, if you're really on to something. But after that you need viable interaction with your customers/users/prospects