"Rising tides lift all boats" - Tumblr joining the Fediverse / #Mastodon Network helps all of us with an influx of new and often younger artist types that #Tumblr caters to.

Soon, many users & the media will start calling the "Mastodon Network" the "Tumblr/Mastodon Network" (apologies to @gargron)

Most importantly, the combination of Tumblr with Mastodon creates for us the ultimate & best Twitter alternative, Batman & Robin.

Tumblr adopting #ActivityPub cuts both ways for the #Fediverse. It makes it easy for people already in the Fediverse to interact with those belonging to Tumblr, and it also makes it possible for those that are on Tumblr to migrate away from it.