Here is an interesting thought from Roy Tennant.
Before you put your digital assets into a content management system (of any kind), understand how you are going to get your stuff back out. Don't just assume that the software will be around forever. Don't assume that "of course" you can get your stuff out without any problems (and the metadata that does along with it). Test it. Using a small sample of your materials, go through the steps to ingest, etc., and then go through the steps to export everything using a format that could be used with another system.
And...test this before you buy/lease/license.
Technorati tag: Content Management System