Timothy Murphy wrote:

1. You must have Acrobat/Reader 7 or greater to read this file.

I wonder why "they" added that requirement.

They're using 7's usage tracking and DRM features.

It's hard to tell just what they're tracking here, but it certainly
"phones home" to log who is reading it (by IP address) and probably
causes a time expiry in February.

I have no major problems running Acrobat 7, but then this is a big and
modern PC. However the DRM stuff is as badly coded as most Acrobat
products are and usually causes me problems by busying out the network
connection until I kill it manually. As I've got gigabit ethernet to my
desktop, that takes quite a bit of doing...