When I completed the side-mission, Water and Honesty, I received money from the stanger and +Fame; I was riding fast towards MacFarlane's ranch to save the game, during which power went off in my apartment.
Now when I restarted playing when the power resumed, I couldn't see this side mission appearing again. I assume that my PS3 saved this side-quest as completed. Now the question is, would it have saved my increased fame and money? I didn't see any Saving... animation on the left top corner of my TV.
Likewise, when I completed Spare the Rod, Spoil the Bandit, I looted the bodies of the bandits I'd neutralised, also my honor was increased moments back when the Marshal left me. With these I was going to save the game, while couple of men were chasing another, when I shot one of them, it turned out that they're lawmen, so a bounty was set on me; I reloaded the last auto saved game and it didn't show this mission any more.
The questions are: When does auto-save kick in? What all does it save? When are fame, honor and money saved? When are mission (both main and side) completions saved?