I wrote about Mastodon the other day. Here's the piece I wrote on ZDNet :
http://www.zdnet.com/article/is-mastodon-the-new-social-media-star-or-imploding-black-hole/

I'm impressed with its growth and stability so far. I'll be watching closely as brands try to work out how to monetize this new audience

@eileenb welcome. :) Please follow @GNOME, @KDE, @elementary and others for your open source/free software desktop news :)
@sri @elementary thanks for this.. Will keep an eye on them
@eileenb @elementary regarding the issue of brand protection on Mastodon. I would say one could create a server with your brand. So say nike.mastodon would have all the Nike branded accounts. It would be very difficult to enforce otherwise. For GNOME I would propose a [email protected] for instance. Something similar can be done, with other companies