I've just spent all morning trying to find out how much an upgrade to Lion will actually cost me.
I am now siting down, otherwise I would have fallen over. I have Adobe Creative Suite 1 which runs on Power PC. In other words Rosetta on MacOS 10.6.8 allows me to still run InDesign and Illustrator.
This is all because Rosetta isn't included in Lion.
To find out which apps won't work, follow the steps below:
Apple icon/More info.../Applications - sort by kind. The list will include Intel,Universal and PowerPC. Because of the absence of Rosetta any apps listed under PowerPC will not run.
It's going to cost me £740 to upgrade my Adobe products. So I won't be upgrading to Lion soon. Not until I can afford to upgrade.