Oh wow I did something very similar, just dumber. https://shopbysub.com I have a raspberry pi gathering Reddit comments with an Amazon link in them every hour, then exposing them on Shop By Sub categorized by subreddit, sorted by upvotes. Same with OP I put my Amazon referral link in there. It's been decently well-received by Reddit, but I have a hard time getting recurring users. It seems like they just forget... - Source: Hacker News / almost 2 years ago

In fact, I liked Reddit so much as a recommendation engine, that I built https://shopbysub.com so folks can browse Amazon product recommendations by subreddit with context and sorting and stuff. e.g. I've been gardening lately and came across a moisture meter on https://shopbysub.com/r/gardening that I wouldn't have otherwise. It's been instrumental to help my overwatering problem. Source: about 2 years ago

I created a site (https://shopbysub.com) that kind of does this. You can browse amazon products that have been linked by redditors in comments by subreddit - e.g. https://www.shopbysub.com/flashlight. Source: almost 3 years ago

I did a thing to somewhat help mitigate this problem. I made https://shopbysub.com which groups Amazon products left in reddit comments by subreddit, and makes them sortable by amount of upvotes. So you can go to e.g. https://shopbysub.com/r/BuyItForLife and see all the amazon products more or less recommended by redditors. Source: over 3 years ago

There are many websites where you can find lot of ideas. You can choose from them. Choose ideas you feel some vibe for i.e. You need to have some kind of love for the problem to have the energy and motivation to keep working on it. Sharing few website links I am aware of: 1. https://microsaashq.com/ 2. https://join.trends.vc/. Source: 7 months ago

Trends.vc breaks down recent trends well, and is based on data: Https://join.trends.vc/. Source: about 1 year ago

I really suggest you do this yourself. - Subscribe to [Startup Ideas on Kernal](https://www.indiehackers.com/series/startup-ideas-on-kernal?utm\_source=indie-hackers-emails&utm\_campaign=ih-newsletter&utm\_medium=email) newsletter. They market themselves as "Startup ideas anyone can build, buy or invest in". - Subscribe to [Trends VC](https://join.trends.vc/), which sends you a weekly report with some great... Source: over 1 year ago

Trends.vc - Discover new markets and ideas. - Source: dev.to / almost 2 years ago

You have a competition, get inspired: https://join.trends.vc/. Source: almost 2 years ago