What makes a CSV file unique is the way its content is organized. Here's what you need to know about CSV files and how to use them.

To import the information into your Gmail Contacts list, copy all of the text and paste it into a simple text editing program such as TextEdit or Notepad. Save the new file as a .csv.

Simple webapp Friends to Gmail converts your Facebook friends list into a Gmail-compatible CSV file complete with birthdays, location, bios, work history, and hometown.