wouldn't Google Earth be a target also, I mean you can read and edit/save KML files that are based off of XML. Hell anything that can read and write XML is probably a target, browsers, web apps, the list can go on and on.
As with all licenses, you will run into that issue.
its up to the 'creator' to research the matreials that they used and make sure that they are not interfeiring
IMHO I hate the term licenses, it makes it seem as if you have no control over anything.
I like the MS Office Communcations Server, it logs everything if you tell it to, on the server side and on the client side. also has lots of other options for file transfers, video conf, phone conf and more
Dear Parents: Due to yesterday's unscheduled field trip to the Auto wrecking yard, the school bus will be out of commision for 2 weeks. By reading this letter out loud, you have waived any legal responsibilty on our part in perpertuity throughout the universe.