This is a very good advice. You can do all sorts of incredible things, but if you don't know how to tell other people about it, it will simply fade into deep folder on your hard drive.

It's been a personal goal of mine this year to blog more and more. The few times where I really put effort into it, I found huge rewards. A simple (but lengthy) article about how to write canvas games ended up being published in the Game Developer Magazine, and I made some money off it. All because the editor saw it, liked it, and emailed me about it.