tsu , a competing social network with about 4.5 million users can earn money based on advertising revenue sharing . on top of that , facebook is blocking users from posting about tsu . try mentioning tsu.co on facebook posts . we 're persona non grata , " said sebastian sobczak , who founded tsu . " in late september , facebook started deleting millions of posts that included links to tsu — more than 9.5 million of them , the smaller company claims . facebook claims tsu links are spam that are annoying the community . unlike most social media sites , including facebook , which keep 100 % of there 's a new social media platform out there — but facebook has blocked all mention of it .