Well, some search engines especially Google use DMOZ Data when displaying results. For example; when you search for your site name in Google, if your website is listed in DMOZ, then the results will be DMOZ Title & DMOZ Site Description. To prevent all search engines from using DMOZ information for the page’s description, use the following meta tag to your pages:
<meta name="robots" content="NOODP">
To specifically prevent Google from using DMOZ information for a page’s description, use the following:
<meta name="googlebot" content="NOODP">
Once you add this meta tag to your pages, it may take some time for changes to your Title & Description to appear in the Google index.