This 1000x. If you're fundraising and want to get in front of investors then sure, spend a little time pining for TC/HN coverage, but you should spend most of your time in front of your specific industry.

Logged in just to say the same thing. If you're asking this question without even knowing where your target market hang out online, you've already lost.

That's very true. But sometimes, it works well to post on startup-centric sites, if you have a product aimed at startups. I just posted my new app here on HN to get some feedback - https://news.ycombinator.com/item?id=7251627