I was positively shocked this week at how strong a response I got from writing a single comment on Hacker News (Hacker News).
Basically I was taking a breather from coding and saw someone had just posted a question Ask HN: How do you learn to build substantial, real world apps?.
Considering this is my business, I simply chimed in the following comment, basically saying "THIS IS WHAT I DO" and expecting MAX 2-3 signups:
This is exactly what I'm covering with my Semicolon&Sons screencasts.
Basically I've run a profitable production web app for 10 years (~14k LOC, 200k monthlies, revenue higher than any day-job I could get) as well as a few Android/IOS apps.
Now I'm creating videos where I show various real-world aspects of writing software in the context of my own production code - e.g.
rapid response systems to production errors
data integrity guarantees
integration testing systems
softer stuff, like optimizing for SEO and on-page conversion.
There's not enough non-beginner material out there and I hope to help fill that gap in resources.
They're all available on my website (same as my username)
The comment got upvoted 20 times on HN and I netted about 70 signups.
This makes me think that monitoring HN/reddit/Twitter for ideal opportunities to chime in a very valuable marketing tool.