FDDI is how digital data is sent over fiber optic cable. Anyone who has access to ftp can transfer publicly available files to his or her computer. Files retrieved from outside sources can contain viruses. All files retrieved from the Internet should be check with a virus protection program. Its primary purpose if for security and is designed to keep unauthorized outsiders from tampering with or accessing information on a networked computer system.
Flames are unfortunately common.
People who frequently write flames are known as flamers. The four separate pages are not output in color they are black dots on clear film. A printing press can only print solid ink, so the colors are simulated by dots the combination of the size of the dot, the space around the dot, and how many dots in an area determine how intense each color is. You can easily see the four separate colors in any printed piece with a magnifying glass.