Hi I use feedburner's Mybrand service to host my blogger feeds. And I used blogger to force redirect feeds to FeedBurner (xxx.blogspot.com/rss.xml to rss.mydomain.com/xxx) Problem was, Sitemaps detected the feed (submitted as a sitemap) having many errors like URL not allowed and/or warnings like Invalid XML: too many tags or Incorrect namespace. Feedburner (whether using MyBrand or not) brings in a couple of ~ in the urls. This is now fixed, thanks to Amit, by submitting the url in the SiteMap Tools as xxx.blogspot.com/rss.xml?redirect=false thereby not redirecting it to the MyBrand feed url. Thanks