Been 7 years, been burned out for nearly 6. ;) And I've been here since I've graduated university in 2005.
And to answer the next question: it's a bank. Every time I've contemplated leaving, there was some major life-changing event that prevented me from doing so (i.e. getting married, wife losing her job, buying a house, moving abroad, having a kid...). Likely I'm making some excuses here, but my point remains: I know a lot of hard-working hackers that simply don't have the time to build a decent GitHub profile.
Those hackers - whom I work with - all read HN extensively to stay abreast of trends, and toy around with side-projects. But all that "side coding" happens whilst at work. And therein lies the problem. If you have ever worked as a programmer on Wall St. you won't need me to spell it out for you, but for those who haven't: your firm owns your intellectual property. Even if it's not related to the firm's business, if you do that work on the firm's premises, it is theirs, and you are not entitled to export it. If you try it is generally considered as grounds for termination.