Rule of thumb:
a. do NOT access your email, facebook, forums on a public Internet connection. Internet cafe or Wi-Fi hot spots are prime targets for hacking. So beware.
b. If you received a message that a friend is asking this money for whatever reasons. Throw it away! A friend in need will personally knock at your door to seek your help.
c. Be aware whatever you post can be read by anyone.
d. Be kind to people.