Before you take the leap and upgrade to Lion, check to see if your apps are compatible.
Lifehacker pointed out RoaringApps has a pretty extensive list of applications arranged in alphabetical order, detailing the current version of the app an comptability with Lion. On the list, if you see a green checkmark, that means it works A-OK on Lion. A yellow exclamation mark means there are some issues and you’re in trouble if you see a red x.
But note many apps still haven’t been tested. If you’re already on Lion, you can submit your experience.
Image: karlnorling via Creative Commons