Honey, I shrunk the font
GWI!ShrunkFont!HTML
06 April 2003
Description
Use very small (size 1) font to hide bogus text (see also The Black Hole).
Example
Notice in this example how the spammer didn't follow the instructions and managed to leave the instructions in the spam.
<p style="margin-bottom: -20"><font size="1" color="#FFFFFF">Random word of
BIG LETTERS with length 1 to 22 TSUTHRXJKVUVBECP</font></p>
<p style="margin-bottom: -20"><font size="1" color="#FFFFFF">Random word of
small letters with length 1 to 16 uyswdgueoclrwlf</font></p>
<p style="margin-bottom: -20"><font size="1" color="#FFFFFF">Random word of
mixed symbols with length 1 to 27 7y14R484w1m7531X</font></p>
<p style="margin-bottom: -20"><font size="1" color="#FFFFFF">Your text 9, note,
maximum length of tag is 255 symbols</font></p>
<p style="margin-bottom: -20"><font size="1" color="#FFFFFF"></font></p>
(This spam also uses Invisible Ink for these words)
There is also a variant that uses CSS instead of HTML (GWI!ShrunkFont!CSS).