Recently, on Meta Stack Overflow at least, Stack Exchange staff have made questions posts in order to promote projects outside of the scope of the Q&A network.
Some recent examples:
An experiment: Stack Overflow TVAn experiment: Stack Overflow TV
Volunteer to help mentor one of 16 new graduates starting a career in programmingVolunteer to help mentor one of 16 new graduates starting a career in programming
There have been a lot of objections to Stack Exchange staff members using the meta sites in this manner. The topics being promoted are very tangential (Essentially blog posts) and if non SE employees posted similar content they would not be treated in the same way.
This has resulted in the topics being closed as off topic multiple times before quickly being reopened again.
I am not advocating either stance on this.
I would just like to open up a discussion as I think the issue needs to be brought outside of the comment and answer sections of these questions. When people are getting heated over something it's best to air the issues out and allow proper explanations and responses to criticism.