[marcosdumay]

In theory, that means that anybody can create a fully compatible editor/reader, and if Adobe tries to change theirs it will be them that are incompatible.

In practice, I don't know why people are talking about PDF. In any recent time, I have only seen people using Adobe readers by accident and haven't heard about anybody using their editor for any reason. I know of some people that buy their editors, just not any that use it.

[jasomill]

I occasionally use a few obscure Acrobat Pro features, mostly in the preflight tool with a UI that looks as though it hasn't been updated since the Clinton administration.

And I occasionally use Acrobat Distiller to convert old PostScript files to PDF, and to embed fonts into old PDF files created without embedded fonts, mostly because I already have it set up to find and embed almost every pre-OpenType outline font ever released by Adobe, Apple, or Microsoft, along with the OpenType fonts in Adobe Font Folio 11.1, and I've never gotten around to setting up all the fonts in Ghostscript.

The only Adobe product I use more than once or twice a month at this point is Photoshop, and mostly for things that almost certainly could just as easily be done in any number of other image editors at this point, or even ImageMagick. It's just that I've been using Photoshop since version 2 (not CS2 ca. 2005, Photoshop 2.0 ca. 1991), so it's comfortable.

[kibibu]

My workplace uses it for documents that need digital signatures.

Acrobat is an awful piece of software.