I still renew it every year, pointing it to the .com.
I think that you assume their IP/web department views the domaining world the way we do. Back in 2003 I registered the .net of a major microprocessor manufacturer (it had dropped) and offered it to them for free. The person in charge of the IP department thanked me and...nothing happened since. I still renew it every year, pointing it to the .com.
I'm more of a "Pro Keds" type of guy personally.