Write whatever you want (as long as it is what I want you to write)
As a web editor, I love bloggers. If they write good stuff regularly, I do not have to. I can develop and edit many more articles per month than I can write, so working with bloggers is a simple matter of editorial economics. And if I invest in the right authors, not only do I get a short term benefit, but I boost credibility for my websites and magazine, which pays long term dividends.
It is all about me
I love it when bloggers listen to my advice. I love it even more when they take my advice. I do not love when bloggers write about whatever they think is important and ignore the needs of my audience. I do not love when bloggers write articles telling half of the audience that they are wrong, dumb, or evil.