Comments like this are almost always the top comment...yet people just can't seem to get the basics right. I'm not a designer, so I know it's much easier said than done, but what's up with the blatant refusal to learn from others' mistakes?
A link like this exists to give you a one-sided case for using an app. Following that up with a counterpoint seems like the most informative way to proceed. I think the HN standard should be that comments of the form "This would likely improve your product" deserve to be voted up, while "Here's why this won't work" should be voted down.
Most people just aren't very picky.
Granted, there are "About" and "Privacy" links at the bottom of the page, but a few more sentences might be helpful.
Sites like this are just throwing away users for no good reason.