Visiting web sites and default email address

[Robert M. Lincoln]

I get the impression that when you visit some web sites, the site can probe
your system and find out your email address.

Is this true? If so, is there a way to prevent it?

Thanks.

 

[spyman]

it might drop a spy on your computer...usually only cookie
use spybot weekly...daily if needed.

www.spybot.com