Update: Yahoo Site Explorer ceased operating on November 21, 2011 and merged its Site Explorer data into Bing Webmaster Tools. Go here to get the specific instructions for verifying your site on Bing Webmaster Tools.
The wordpress plugin All in One Webmaster lets you verify your website in the respective webmaster tools of top search engines such as Google and Bing (MSN).
To install the All in One Webmaster plugin:
To verify your site in Yahoo Site Explorer using the All in One Webmaster plugin:
<META name="y_key" content="21b996a5fc4823e0" />
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