I'm thinking about getting Minecraft for a few family members. I know it's possible to play together using the LAN option, but I'd like for my family members to be able to load up the world and work on their stuff even if I'm not playing at the moment. I don't want to use the realms, however. I found an article showing how to make your world accessible from multiple computers by essentially moving the saves location to Dropbox. I can't see why this wouldn't work for multiple people's computers, as opposed to multiple computers owned by one person unless the worlds are directly linked to the creator's account or some such.
Using this method, if my family members all had their Minecraft saves set to save to the same Dropbox folder, would anyone be able to access and play on anyone else's world, even when the person who originally created the world isn't playing? And would multiplayer still work properly when we wanted to play simultaneously?