always freeze apps. never remove them.
people are used to removing them because in the old days, phones only came with 1 gig or 2 gigs of storage space. So people wanted to make room for other apps.
the razr comes with 16 gb internal and the option for a 32 gb sd card. there is PLENTY of space for app downloads for the next 5 years. you do not have to delete anything.
freezing will help when you upgrade phone software. when you delete apps, when they push out upgrades, that upgrade might be wanting to patch an app that you deleted. if that's the case, the upgrade will fail.
and also like mhotovec said, the app you delete might have some crazy use on your phone. I know the yahoo system apps are not used for yahoo. it's used for your contact list. so if you delete them, when you want to make a call and open your contact list.. it will force close instantly. I had it happen to me and I had to get a new phone to fix the issue.