How to prevent search engines form using your dmoz and yahoo directory description at search results ?

If you like that your site description at DMOZ will not show at google search results you will need this html tag:

<meta name=”robots” content=”NOODP”>

Yahoo also have a new directory tag !.

updated 09/21/2007 - yahoo now support this tag <meta name=”robots” content=”NOODP”>
read more about this at yahoo blog this tag are similar to dmoz no directory tag at google, but this tag are for yahoo search results to prevent yahoo to show your yahoo directory description.

to used this no yahoo directory tag used:

<meta name=”robots” content=”noydir” />