Facebook won't let you type this

Try mentioning the social media website Tsu.co on Facebook or Instagram — or even in a private conversation on Facebook Messenger. It won't work.

Facebook (FB, Tech30) is blocking any link to Tsu.co on every platform it owns, including Messenger and Instagram. It even went back and deleted more than 1 million Facebook posts that ever mentioned Tsu.co, making pictures, videos and comments disappear in an instant.

You can type the name “Tsu,” but you'll be blocked if you write “Tsu.co” or post any link from the site.

Facebook claims Tsu links are spam that are annoying the community. Tsu thinks Facebook is a bully trying to kill off competition.

“We're persona non grata,” said Sebastian Sobczak, who founded Tsu. “You can type in all sorts of seedy websites, and you can get to them. But not us. We don't exist.”