I wasn't sure if it would be a full blog, or just a CoffeeCorner post, but as you see, we can have both: https://blogs.sap.com/2018/09/14/microblogging-as-an-addition-to-sap-community-introducing-mastondon-gnusocial-fediverse/
tl;dr: I'm on Mastodon now: @Joachim_Rees@mastodon.technology . How about you? ;-)
Also, I only now noticed, that good old tag "Using SAP.com" was change to "SAP Community" - makes sense! (And as far as I can tell, the cryptic representaion of it , https://blogs.sap.com/tags/486157991894093153608181816584982 stayed the same, so RSS-feeds still work fine!)
best
Joachim
PS: I also updated my profile, for the first time filling the "ELSEWHERE"-part!