As time goes by, people should be publishing interesting blog posts, getting involved in interesting projects, amassing followers in social media and generally making a name for themselves.
Ideally, you want to get to the point where people ask you to work for them, rather than the other way around. Learning and showing that learning applied is a very effective route.
It's not about marketing and over-the-top self promotion. It's more about taking control over defining yourself so you can't be easily stereotyped based on a cookie-cutter resume.