One of the biggest pains of any developer is maintaing the source code. Especially if you - like me - have a gazillion pet projects that need to be updated whenever you come up with "cool idea #20000" for one of them.

Version control systems like Mercurial are awesome, but they are only part of the equation; there's still the time consuming process of deploying the changes to "production". So i wonder if it would be a good idea to have a Mercurial repository sitting on a dropbox account and develop directly there. This way any changes to the source code would be instantly reflected on production.

I am aware that this is unthinkable for serious projects (the kind you get paid to do), but it can probably work for fun pet projects.

Do you have any experience with something like that? Share your thoughts, if you have any :)