Big differences when opening files in 10.6

I just got my copy of Snow Leopard and haven't installed it yet -- there's a regimen of saving off old project files and cleanup first -- but I was very interested when one of our list members pointed out this article (thanks, E!) Big change. Here's what: I create a file. Save it. Later I open it. Maybe it doesn't open in the same program I used to create it. Chaos and confusion ensues. Two articles to read: E. pointed us at this article which describes this big change in file opening and gives some work-arounds.

If you’re happy with this change in file handling in Snow Leopard, you’re set—things now work as you probably feel they always should have. For others, though, there are a couple of different workarounds, none of which I would describe as ideal.

Then read this one (warning: techy stuff) which explains why this is a forward-looking step.

Snow Leopard's abandonment of Creator Code metadata, used to open a file with its creating application, has some users are worried that Apple has killed off a core Mac-centric feature. Instead, Apple has invented a superior alternative for the old Creator Code in order to support a variety of new features. Here's why, and what the new Uniform Type Identifiers offer.