What? A new blog post? You have to be kidding me!
To have the core SharePoint search results webpart display its results as pure XML so that you can see what is being returned by the search engine, paste this in as the XSLT transform
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" >
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes" />
<xsl:template match="/">
<xmp><xsl:copy-of select="*"/></xmp>
</xsl:template>
</xsl:stylesheet>
b6f0b9fc-0274-4118-b4bc-ef5a7d0bafd9|1|5.0