I made a minimalistic social media website in only 1 minute: https://social-mdeia.1tim.repl.co/ 
heh i made a social media in a few minutes where only the server owner can make posts
once I made a social media in 2 days and it had both HTML and SQLite injection
Suggestions for wasteof.money:
Add an option to edit your comments
Embeds
Bots
→ 