The URL that is displayed in the text has no relationship to the actual URL that is in the HTML code
so someone can put a line like "Visit www.target.com"
But the code is more like this (the code below is intentionally broken up with spaces so you can read it and yahoo doesnt turn it into a link)
< A : HREF= " h t t p : // www . reallybadplace.com "> Visit www.target.com < / A >
or the URL can be constructed like
www.target.com.reallybadplace. com/contestwinner/
The www.target.com is just a machine name which can be anything, reallybadplace is the real server domain name
Also if there is an @ or a ? in the code, it can alter the way the URL works
www.target. com/contestwinner/replynow/ @ www.reallybadplace. com does not go to target.com, it goes to reallybadplace.com
Moral of the story NEVER EVER go to a weblink that is in an unknown email.
If you want to go to a site, type the address manually into your web browser location bar so you know that it is the address you intend.