I am on a mac with Office 2011. Export from Word as .rtf format.
To do these steps automatically, there is also a "send to Powerpoint" option in Word, ( not viewable by default, you have to enable this View -> toolbars -> customize) which does the same thing, but I could not get this to work.

As above, be sure to make titles Heading1, content Heading 2, don't leave blank lines

Has anyone found a way to ensure content is page-breaked to fit onto a slide without chopping later?

Does not handle large word documents

Ian