HN user
A blog should be a natural extension of who you are and what you're doing. If you have to ask about what you should and should not put in it, you should go back to the drawing board and make explicit what your goals are for your blog. Is it just eyeballs for the sake of eyeballs? Then mix everything. Is it to attract a certain caliber of people who are going to use your services? Then stick to topics of common interest.
Every article I've seen on this topic (and there have been many) confounds what it means by "the new Microsoft." Most use the term to mean "plays hardball and engages in appalling practices that alienate certain groups of people," which, while arguably true, are not against the law. The discussion then gets defined by a group of folks pointing out the problems with this behavior, opposed by libertarians who claim that they should be allowed to do whatever they like. In turn, this leads to an uninformed, boring discussion: I'm not interested in discussing what other people believe Apple "should" do from an ethical/moral perspective -- Apple clearly knows its own interests better than any johnny-come-lately blogger, and they have decided that screwing around with their developers is good for their bottom line.
The proper point to focus on is a simple one: is Apple using its monopoly power in one application area (e.g. the App Store), to gain a monopoly in another (e.g. voice applications)? For to do so _is_ illegal. Our lawmakers have already pondered this issue and deemed it unacceptable. They have stated the illegal behavior precisely. A proper DA should have no difficulty prosecuting this behavior.
P.S. I also don't understand the level of whining among the iphone devs. The Android is an open platform, move over already - you can't choose to be punished and then whine about it.