How do you know when to keep pursuing an idea?

I think you are working on a too small problem. People get ghosted for various reasons and you can't imply that at a company level. Anyway, the point is - the problem you are solving is trivial. I would highly recommend you to go through Micro SaaS Ideas newsletter and pick up something that solve better problems.

I tend to agree with @upenv
I don't really see this as a problem. As somebody who interviewed (personally) hundreds of candidates, I hardly ever had the time to tell them they're unsuccessful
We've all got busy lives and I left it to the HR team to do it (which was also busy, so doubt they actually did)

You’ve built a lead gen tool. People who get ghosted will want to avoid that in the future if they can. CV generators, Job boards and so on are products to push to the traffic captured by what you have built.

Doesn't seem like there's a clear path to profitability at this stage, very hard to sustain over time

The best shot in my opinion is to share it to people that are interested and are willing to review it. What people in Reddit said about it? In this case, it's not visitors that matter, but reviews. Like if so many people saw this and were interested in this, you'd know it

I would recommend that you started by talking to your users in order to learn more about their problems. Ghosting certainly triggers a lot of anger, so you could probably get people to speak out and get media attention.

For the nth time. It's not about the idea but the problem you are solving :)

Develope a page to listing jobs

I personally think it's a fun and good idea, you're building traffic and hopefully an audience. You'll find a way to monetize later! Keep at it!

I'll know if my idea was worth it if it went through PMF. Did mine with founders cafe in two weeks :-D https://founderscafe.io/post/how-to-get-product-market-fit-in-2-weeks

Not being flippant at all, but when people start paying for it early on

Tbh, I'm also pretty new to this problem. Though from my current indie project, I mostly relied on the feedback/response that I got from sharing things on twitter and that kept me to continue working on the new project.
Also one thing I learned from my last indie project was that if its taking you enormous time to create a fraction of value to the users then that might not work well in long term for your project and may want to switch to something else.

The thing that everybody is doing and I am not doing at all, is having a blog around my product. I also recommend you the same to create some useful articles and share them social idea to get that boost.

Monitor things for first 3 months, you will get the answer.

I guess that's it. If you've done a test to validate the market and traction then you can start asking yourself if it's worth pulling the plug. That's why it's great to mvp iteratively before you invest too much.

Unless it's a passion project and you push through the initial resistance and pivot on customer feedback til it finally hits like 5 yrs later. But that's really hard so it's like what are you after? Most of us here I think are looking for that 80/20 rule where we do 20%effort to find the 80% winning product, rather that 100% effort for years to finally maybe make it big

TLDR: some signs of traction 💪