Already have a Google Sitemap? Why not submit it to Yahoo too? First you’ll need to set up a Yahoo account and authenticate your site, much like you would on Google. Set up your site here:

http://siteexplorer.search.yahoo.com/ (see my post on Yahoo Site Explorer)

Once your site has been added, they accept sitemap submissions here:

https://siteexplorer.search.yahoo.com/submit

Once logged in, here’s what you’ll see:

Whereas Google asks you to enter your sitemap, but you can also enter your site feed, Yahoo asks you to enter your site feed, but you can also enter your sitemap. They just have to be different. Individual. Unique.

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Once your sitemap is entered (or site feed, for you bloggers), you’ll be taken to your feed page, which looks very similar to the sitemaps page in Google Webmaster tools:

Like Google Sitemaps, it allows you to resubmit at will, and shows you when you last submitted, and when it was last uploaded:

I’ve heard talk the MSN will also accept sitemap submission in the near future. I’m waiting.