[scrollaway]

Archive.org lets you upload your own files, with metadata.

http://archive.org/

You have a bit more of a guarantee there. Bonus points if you fill in the copyright field correctly.

PDFs, audio files, video files etc will all be post-processed and rendered like you would expect them to be.

[baby]

Isn't that taking advantage of a service that is not to be used for this?

[scrollaway]

The Archive's philosophy is that they welcome any and all content. If you want your content to be on the internet, available for everyone to see and for the future to find, then by all means use the archive. Far more apt than a dropbox folder imho.

[djsumdog]

I don't see the harm so long as you're releasing your own content, either into the public domain or under a CC license.