Font made with CSS

Since I think that some people do not understand the meaning, let's first take a look at the linked page.

Stu nicholls | CSS PLaY | a CSS font
http://www.cssplay.co.uk/menu/cssfont.html

Some numbers and alphabets are lined up, but this is not of course a character, so I can not select it with the mouse. Also, it is not an image so you can not search for an address. In short, it means that it is a "font" made entirely of CSS.
The following page was based on this idea.

Spamblogging: Proof of concept to throw off the bots.
http://www.spamblogging.com/archives/000081.html

With this, it is possible to display the e-mail address for contact to me, without being caught by the address collection bot for spam mails ...