Recently I came across a client who had <meta name=”robots” content=”NOYDIR” /> and <meta name=”robots” content=”NOODP” /> tags in their meta data and I feel there is need to go in depth on the purpose of these two tags and how they can affect SEO. A while back we wrote on this topic when the new canonical tag came out. But it’s been a few months and I feel it’s important to highlight the two tags individually. Let’s talk about NOODP first. According to Matt Cutts blog, in some cases, if someone types in a keyword into the search, Google may use descriptions from the open directory project as the page title and meta description for you organic listing. The NOODP tag allows you to essentially opt out of the open directory project title and description override. Just in case you weren’t aware, the open directory project is DMOZ. Matt mentions that it may take 3 to 4 days for your NOODP meta tag to update after your page was re-craw...