She didn't post the logo as we've seen it branded. She modified the logo by turning it into an animated gif and making it flash.
I don't know if Steemit, Inc. approves with this "version" of the newly created logo (flashing colors)
It might technically be considered fair use. I am not a lawyer. However I will not be using the new logo just to avoid "technical legal issues". :)
Fair enough, I wouldn't criticize anyone for using some caution, but I'm seeing some people posting comments that they're afraid to even use the word Steemit, as if typing "Come check out my Steemit blog" on their Facebook or Twitter profile will get them sued.
Everyone just needs to calm down and relax. I really believe the two main drivers (as with any other site) are not to illegally merchandise the intellectual property, and not to use the property (logo and name) in a way that could confuse someone into thinking your project/blog/site is in any way officially sponsored or endorsed by or is a part of Steemit Inc.
I know, it's gotten quite silly pretty fast. Each time someone replies to me with the steem-t or steem-- way of talking, I explain to them, it is only if you are promoting and marketing your own stuff using the brand name and logo (as if it was your own or you were authorized) does it become a problem.
Prior to this new logo, people were printing steemit and the blue logo on t-shirts, mugs, posters, everywhere. You can't do that with this new green logo.
Steemit is the new Voldemort.