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Denis Yurchak
- Founder of Yadaphone
- $15,000 monthly revenue
Denis Yurchak tweets…
1 year ago, I was depressed and had only $300 in my bank account
Now my product makes $15,000 a month
He’d built 15 products in 3 years but hadn’t made much money 
Then…
In March 2025, Skype closed down. I used Skype myself to call while traveling and knew there was an audience for this
I’ve put everything I learned together and made yadaphone.com. I posted on every subreddit I could find, got blocked, reached out to blog owners, and told all my friends about it
This time it took off – 500 users in the first month, 1000 in the second – and now I have 10,000 people signed up, with over half of them paying
Takeaway: keep an eye out for popular websites / products / services that are shutting down.
Is there one you could replace? 
Bonus: I asked ChatGPT if there’s a place to see a list of popular products that are due to be shut down… nothing like that seems to exist.
How about building a website / newsletter / social account along those lines? 