Most of the games available on Big Fish Games autosave. This can be a problem sometimes; if something messes up near the end of a game, I have to restart all the way from the beginning again.
I finally figured out where they keep the various save files! It's in AppData-->Roaming, where the files are sorted by company name. This helps me get around the autosave feature, in a sense. If I copy/paste a save file, I can duplicate the effect of reloading from an earlier save.
I think this would be most useful, with speedrunning. Specifically, it'd help with segmented runs; those are runs where you use save states to help you get your maximum speed. Normally, people save before randomly-determined puzzles. That way, if you get a really bad puzzle setup, you can reload and try again. I'm thinking this would be super useful with hidden objects challenges. You know, I save as soon as a hidden objects challenge appears. I figure out where all the items are located, then I reload.
Just out of curiosity, which non-Nancy Drew games would you readers like to see me speedrun? I think Dana Knightstone and Haunted Halls are the most popular non-Nancy Drew game series that I play. I wouldn't mind having a go at Phoenix Wright, if I could get the equipment to record handheld games.