Other search engines using sitemaps.org?

Are there other search engines besides google, bing/yahoo and ask that use sitemaps.org?
It seems yandex (Russia), exalead, seznam (Czech), is using it. Is that possible?

Is there a way to submit your sitemap to baidu?

all major search engines support the XML sitemap protocol now.

If you can translate or navigate through Mandarin,
????Sitemap

Thanks for the baidu sitemap.

Are there any plans to add sitemap ping for other major SE, besides the ones included in vbSEO now?

No, but you can easily add your own services if you know the ping url.

towards the bottom of vbseo_sitemap_functions.php

you will find

Code:

    function vbseo_sitemap_ping_url($url)
       {
           global $vbseo_stat;
           $vbseo_stat['ping'] = vbseo_sitemap_ping_one(
               'http://www.google.com/webmasters/tools/ping?sitemap='.urlencode($url), 'Received');

           $vbseo_stat['pingyahoo'] = vbseo_sitemap_ping_one(
               'http://search.yahooapis.com/SiteExplorerService/V1/updateNotification?appid='.VBSEO_YAHOO_APPID.'&url='.urlencode($url),
               'successfully');

           $vbseo_stat['pingask'] = vbseo_sitemap_ping_one(
               'http://submissions.ask.com/ping?sitemap='.urlencode($url),
             'successful');


           $vbseo_stat['pingbing'] = vbseo_sitemap_ping_one(
               'http://www.bing.com/webmaster/ping.aspx?siteMap='.urlencode($url),
            'Thanks for');

        return ;
       }

Simply put in the new syntax/url for the new service ping url, and it's on-page response string when you do it manually (the 'thank you' string so you know if it was successful or not.

ie

Code:

$vbseo_stat['pingSOMENEWSITE'] = vbseo_sitemap_ping_one(
               'http://www.SOMENEWSITE.com/ping.php?siteMap='.urlencode($url),
            'successmessage');

in before the return

Is there any way to ping it automatically and see if it was successful?

yeah, just load that url with your sitemap url at the end of it in a browser