Service to allow Dropbox upload for non-Dropbox User [closed]

Is there a method or service that I could use to allow a non-Dropbox user to upload a document to one of my Dropbox folders without creating an account of their own?

I get documents weekly from new contributors, many of whom don't have a Dropbox account. It would be very convenient if there were a way for them to send files to my Dropbox shared folders without having to go through the process of setting up an account and installing the Dropbox client.

If you're open to using e-mail...

Send To Dropbox gives you a unique e-mail address. Any attachments sent to that address are added to your Dropbox.

or

MailDrop monitors your e-mail client (for a keyword or a specific folder) and, when triggered, uploads any attachments to Dropbox.

Maybe if you choose to sync a folder and make that folder avaliable on the web.
I'm thinking about having a webserver (like XAMPP/LAMP) installed on your PC, and the folder is accessible on the web.

Then you can simply use a html/php script to protect the folders (for each contributor) with password, and as soon as they upload stuff, you sync them. (and they get avaliable on Dropbox.)

However, you should have a pretty good anti-virus (Like Avast? No ad intended.) installed since they can upload virtually anything. (Except if you specify that stuff too in your php script.)