When the announcement was first made that Yahoo had purchased Tumblr, thousands of users began posting their concerns that the service would remove its erotica category which made up roughly 10 percent of the social blogging service's user base. Yahoo shortly thereafter released a statement that said they had no intentions to remove any of the adult material, pages, or blogs from Tumblr.
Yesterday, Yahoo completely backtracked on the promises and removed more than 12 million blogs from the service that were marked as featuring adult content on both Tumbler's internal search results and the indexing of all of the major search engines such as Google and Bing. Additionally, the "Erotica" category has been removed alongside other adult themed content.
While the blogs are still hosted on the site, removing them from any and all search results as well as any internal linking that would help users find their way to such blogs renders them virtually invisible and only findable through direct links. Additionally, a recent update to Tumbler's iOS app removed search results for the hashtags #Gay, #Lesbian, and #Bisexual.