Hi Knello,
I work in the CC industry and disagree with some of your statements.
Subtitles are easily done in DVD Studio Pro.
First off, I strongly disagree that subtitles are "easy" in DVDSP. Have you ever tried actually subtitling a project in DVDSP? A two hour film with 3000+ subtitles (and I'm talking about only ONE language here)? The workflow there is terrible! It takes 20 hours to do in DVDSP what you can do in 20 minutes in MacCaption.
And even if you spend 20 hours doing it in DVDSP, the subtitles are useless outside of DVDSP. If you want to put your project on the web, or broadcast, or a podcast, or Blu-ray... you have to re-do the subtitles or CC from scratch! In MacCaption, you do it once and then you can export to EVERY possible format (both CC and subtitles), and the workflow is much faster and easier. If you don't believe me, download the free MacCaption demo or watch the free video tutorials to see how it works.
If it's being distributed on DVD or web, subtitles are the way to go. Closed captioning is sensible ONLY for broadcast television.
Strongly disagree here too. Ask any hearing impaired person (there are
only 40 million of them in the US) and they will probably tell you they strongly prefer closed captions over subtitles.
A little anecdote, but a month ago I was at a FCC meeting in Washington, DC that dealt with closed captions. One big company representative told the audience "Well, we do subtitles, which are just as good." The deaf and hearing impaired members of the meeting were FURIOUS that he said that!

Most people have no idea how important (and emotional) the issue of CC vs. subtitles is to to the hearing impaired.
YouTube, Flash, QuickTime, Windows Media, etc. all work better with closed captions than with subtitles. For example, on YouTube, closed captions can automatically be translated into other languages. How cool is that?
