The short-form video app was acquired by Twitter before its official launch and ended up becoming the most downloaded free app in the US iOS App Store at its peak in 2013. Up until that point, it was the most popular video app ever seen.
But it didn't last long. Vine failed to adapt as other rivals (e.g. Snapchat) emerged and adapted. Additionally, Twitter's own business was in turmoil, forcing Twitter to shut down Vine in late 2016.
9. Google Plus
Another “test” by Google, the fate of Google Plus turned out to be the same as many of Google’s other attempts at building a social network: failure.
A revolutionary platform in the way it helped evolve search while educating the web marketing world more about authority and entities across the globe, Google Plus turned out to be another failed attempt to dethrone Facebook by a rival social network.
But it wasn't even a social network. And perhaps that's where many of its problems arose.
Google was really focused on its “identity network” because of plans to be an identity food and beverage email list service provider for a federally run program.
It offered nothing worthy to its users and, for that reason, it is now where it is: extinct.
10. MySpace
Yes, MySpace still exists.
You have a working URL, an office with employees, and most importantly, you can sign up for a new account right now.
But this is not the same pioneering MySpace that helped spawn social networks from what seemed like a few dark basements to what ended up being billions of homes around the world.
This is the MySpace that helped shape today's digital marketing era, further catalyzing Facebook's success when it relinquished its title as the most popular social media network. MySpace went from being the most visited website in the world in 2006 to losing 10 million unique users in just one month in 2011.