For Yahoo, MSN and Ask you have to manually ping them occasionally. So here's what you have to do to submit your sitemap to these lazy Search engines:
In the address bar of your Internet browser (IE, Firefox, Opera etc.), paste these lines one by one and hit enter:
Remember to replace the text in red with your own website's url.
Submit Sitemap to Yahoo! :
http://search.yahooapis.com/SiteExplorerService/V1/updateNotification?appid=SitemapWriter&url=
http://www.knownunknownfacts.blogspot.com/atom.xml?redirect=false
http://search.yahooapis.com/SiteExplorerService/V1/ping?sitemap=
http://www.knownunknownfacts.blogspot.com/atom.xml?redirect=false
Submit Sitemap to Windows Live:
http://webmaster.live.com/ping.aspx?siteMap=
http://www.knownunknownfacts.blogspot.com/atom.xml
Submit Sitemap to Ask.com:
http://submissions.ask.com/ping?sitemap=
http://www.knownunknownfacts.blogspot.com/atom.xml
Submit Sitemap to Bing.com:
www.bing.com/webmaster/ping.aspx?siteMap=
http://www.knownunknownfacts.blogspot.com/atom.xml
NOTE: Change the links in RED, with your own Sitemaps (and instead of atom.xml you may use rss.xml too).