Can you get dropbox shared folder metadata without accessing the api?

Thanks, It would be really nice if it could be added to the file metadata as a dictionary of dropbox metadata... or something like that.  Then, as files are passed around, the dropbox information (and I guess an advertisement -- if you think about it like that) would be passed along with it. 

Is there any way for me to add this sort of system to my dropbox by writing code that is run when my user adds a file?

I would assume not.  Dropbox is great, but I have been sorely disappointed by its flexibility.  Unless I see some major changes (like being able to share parent and child folders separately) it is unlikely that I will continue to be a customer.