3. 1. F Facebook F F F F F F
F F F F F F F F F
F
*** F
- F F F F F
- F F F F F F F
F F
2. F F F
F F F F
4. 3. F FF F F F Hotmail
4. F F F Hotmail F F F F F F F Facebook
F FF F Facebook F
*** F
- F F F F F junk mail
5. F F F F F F F
F FF 3
5.1. F F
5.2. F F
5.3. F F F F F F
*** F
- F 3 F F
6. F F F