tsū is a free social network and payment platform that shares up to 90% of revenues with its users. (tsū is pronounced ‘Sue’) ( Official description )
'It's your content'
Many sites are referring to tsū as "Tsu is a social platform that rewards all users for their original content and network. It's your content. Own it." whereas it's just another walled garden, where you do get paid for content, but you don't own it.
By 2015-11 tsū doesn't have an API.