https://www.ericsbinaryworld.com/2009/02/27/adobe-lightroom-2-further-use/
So I did a test and found that as long as I save the metadata to the file, Adobe Bridge (even with CS2) can correctly read the changes. So I decided to work in Lightroom to see if it was worth buying. I can say that I am really loving it! I’ve been able to adopt my usual RAW workflow with only some small changes. Now I can’t see how I could ever work without LR!! (It’s no wonder why Adobe gives a 30 day free trial!)