"I miss Stumbleupon". That was the Tweet of someone I follow in Twitter. StumbleUpon was one of the big players in the early days of the internet, when Facebook and Twitter were small and unknown. The idea was to "stumble" through a million websites based on your likes, chosen categories and so on. Unfortunately, the site was shut down in 2018.
When reading that tweet, I looked for sites similar to Stumbleupon. But all I found was more of less mediocre. Most had low quality content, or just a few websites, or just worked way different. I was not satisfied. So I decided to build a new version on my own. The site was called "Stumbled" initially.