Free web servers to publish csv files or other types of data

I am writing an App that requires some kind of outside input which I want the user to be able to update sporadically.

Are there 开发者_开发问答any free web services where one can upload a file e.g. CSV and update it at any stage and then access it via iOS?

What about dropbox? Its free for small amounts and has a desktop and IOS client. It also has a fairly decent API.

http://www.dropbox.com