Only if there is 1 version difference between the different Office Suites. Allow more to creep in with Domestic Users or worse still some Business Users who are mandated what Format that they need to submit Documents in and they need to have their documents read by the receiver and it's firstly not possible to insist that the receiver installs anything on their systems and even if you force them to it doesn't render the document readable always.

For instance here a Government Department requires that Tenders be submitted electronically in .DOC Format the first company who had moved to Office 2007 sent in a Tender for a smallish job of about 24 Million and where promptly told that their Tender didn't open.

They resubmitted the Tender again which again didn't open and the person who received the unopenable file dumped it as the company placing the tender obviously wasn't interested enough to submit a readable Tender. Back then they where told to submit all Tenders as Word Documents not .DOC instead of .DOCX, the result not considered for that job and a listing against the company that they appeared not to care and to move them to the Bottom of the List out of the Acceptable Tenderes.

Doesn't matter what you have you need to work with the people who you communicate with and submit Electronic Documents in a format that is readable to them and it's insanity to believe that you can tell anyone what they need on their system to read your Documents. Microsoft ignored this and it was their Customers who suffered.

Col