>>4. Don't give my email to all people only to selected people
>
>That's a good idea, but you can´t say that the people that has your e-mail does the same. The big problems starts when somebody sends an e-mail to several addresses without using the BCC (Blind Carbon Copy) option. That´s when you e-mail address runs all over the internet.

I've received 4 worms at work and one at home already...