>My biggest take away is that Hacker News is typically not my target market. I don't think I have ever converted HN user into a paying customer.
While "Capture full-size or full-height screenshots" is likely a large selling point for less-technical users, I would initially close the tab right after thinking it was yet-another-make-screenshotting-fullpage-websites-easier-tool for less technical users. The thinking for Firefox users probably goes
"Why would I pay for `screenshot --fullpage`" or for many others, "Why would I pay for what is essentially Sharex?"
They likely ignore the automation parts of the service, because they aren't making it that far into your marketing:
>store them, serve them, and make sure they stay fresh and updated.
Just my $0.02 for why you probably don't get any HN users. I think your marketing is better as-is catering to either the less-technical crowds or the technical-crowds that make it far enough in your marketing than if you changed it to market towards technical people who make assumptions after reading one feature. :)
That's the blind spot of being technically competent.
You would be amazed at what the average person considers hard. For example, the idea of converting a repeatable calculation into an Excel worksheet is regarded as arcane black magic by a fraction of the professional population.
Automating a repetitive task with Excel macros? Whoa there, cowboy... Gonna have to get IT involved...
Web page screen shots as a service.
My biggest take away is that Hacker News is typically not my target market. I don't think I have ever converted HN user into a paying customer.