Microsoft Office and other Windows Applications store all sorts of personal information when you save a file. Your name, computer name, company, date and time last edited are all examples of data included in a simple Word document file.
If you are concerned about your privacy there is an easy way to strip this information from a file.

1. Right click on the file and select Properties
2. Click on the Details Tab
3. Click Remove Properties and Personal Information on the bottom of the window
4. Select Remove the following properties from this file option and check all the items you want to remove. I suggest using the Select All button.
5. Hit OK and you are finished. All personal information is now removed.