Filebin is a place you can simply upload a file to. It lets you upload your file, then provides a convenient URL you can share with whomever you please, through e-mail, social networking or even in person.
Simply select a file to upload, select the Upload to Filebin button, and it will return a URL you can share.
You are presently anonymous. Perhaps you want to sign in to filebin.ca. Registered users have more relaxed rules and more features.
Basically, in trying to keep this service free for general use, there are a few limitations.