For several reasons you may want to keep your anonymity when uploading to appropedia here.
Attachments may contain information regarding your identity, including any information that may appear on a file's Properties on Windows and Get Info on Macintosh. This means that the someone may be able to retrieve your identity by looking at the properties of a document. There are a couple of ways of avoiding this such as:
- 'Clean' Your Word File - You can clean up your Word file before uploading it as an Attachment. Microsoft has a tool that can help you with this and it can be downloaded from: 
- 'Clean' Your PDF file - Similarly, you can clean a pdf file, with a free tool available from