Question about saving multiple games....

Each save is limited to the account in question so, yes you can save the same game to multiple profiles without deleting other profile saves.

[quote user="Jameser78"]

Each profile earns it's own achievements, even if offline.

[/quote]This is so true! All profiles will save seperately so when your cleaning up your HDD don't dlete their profile. I have one other profile that has like 15mb associated with it. Now if you get to the Family Plan, you can have 4 players for $100 bucks
a year. Each of those folks can add points from cards or you can give them some for "Family Matters". Thats what I'm doing and you don't even have to be on the same console. I figure my gold account is only costing me $25 bucks as the SIL is paying for his
3 accounts. So far it has been great! JMHO

Each profile earns it's own achievements, even if offline.

Using separate save devices is the best idea. I have a flash drive that I keep mine on, and periodically I copy my recent one to the hard drive. But if multiple people are playing, then the best thing is to just tell everyone to use a different place.
They need a system like Mass Effect has, where you can load different careers.

My daughters, 9 & 11 play also, they both play the same character, of their own creation but use my account, they do not have one.

I upload their most recent local save to the cloud while getting ready for bed. Pretty sure you can set your Xbox to save to the cloud or console, but not both. My upload speed is horrendously slow, so I would not do that. It helps us to save a view that
is looking at your character in 3rd person so you can easily tell who is who in the thumbnail views from the "load" menu. So far no catastrophic incident or tears have been shed.

I keep most of our old saves on a 16gb thumb drive as well.