Doesn't it just overwrite the latest save though? I dunno, I am scared to use cloud saving after Steam couldn't tell me which of my offline or online save was the newest. It just asked if I would like to sync saves or something and subsequently I lost my latest progress with an old save. I've never used Cloud since.
That is the auto save
You know Bethesda can't be trusted to give us a competent product at least for the PS3, manual saves are a GODDAMN necessity!
PS+ Cloud works 2 ways
When you start a game for the first time, a prompt asks if you would like to upload your saves to the PS+ Cloud
Whenever you have your PS3 set-up for to do it wake up and do it's automatic shenanigans, it will upload all save files to the cloud for you automatically
Or you can decline the offer and manually pick and choose which files to upload
I have mostly 95% copyright prohibited *cough*Demon's Soul*cough* game saves
The occasional save just in case shit scenario
I have my saves backed-up 4+ times, usb stick (dedicated only to it), laptop, external HDD, and PSP 4GB memory pro stick
Also on the PS3 HDD and PS+
Now I have 1GB to play with, I was < 50mb on the 150mb allocation