Adidas launched an official soccer Tumblr blog and bought placements on the user dashboard.
This launch was only two months after Tumblr announced it would be moving towards paid advertising on its site.
On November 10, 2015, Tumblr introduced an integrated instant messaging function, allowing users to chat between other Tumblr users.
The feature is being rolled out in a "viral" manner; it was initially made available to a group of 1500 users; other users may receive access to the messaging system if they are sent a message by any user that has received access to the system itself.
Anyone can opt-in by disabling Safe Mode in their Dashboard Settings.