What on earth is with all this knee-jerk criticism of Ubuntu, at every single time they do anything?
I'm not particularly a fan of Ubuntu (my allegiance, as far as there is one, is with Linux in general, and even more generally open and unix-like systems), but from where I stand, it sure looks like the Ubuntu folks are the most active, at the moment, in improving the Linux experience.
Which means fixing problems (as in the 100 papercuts project), and also trying new things. Of course not everything they try is going to turn out to be good, but so far I'd say their track record is fairly good, with Upstart, the new notification system, integration of 3d effects, and yes, even the switch to PulseAudio (which apparently didn't originate with Ubuntu anyway, but people still yell at them for it).
Obviously they need to find ways to fund their company... can't really blame them for that, and so far I don't see any of their commercially motivated changes to be a problem. The switch to Yahoo Search would have been just a slight annoyance that gets changed in all of 2 seconds, and they just reverted it.
So personally I'd rather be constructive and give the benefit of the doubt to things that people try, whether it is Ubuntu or Fedora or GNOME or Debian. One of the beauties of Open Source is that things that turn out to be bad ideas get quickly reverted, or someone comes up with an easy way to change them.
PS: note to the Ubuntu folks: get someone else to write your announcements. Sounding like a big bad impersonal machine (a la Apple) is not the right tone.