>     <xsl:template match="Folder">
>       
>         <xsl:for-each
> select="Placemark/ExtendedData/Data[@name='rdb_status' and 
> value='Endangered']">

Does the Folder element have a child called Placemark?
>        
>             <xsl:value-of select="@id" />,
>             <xsl:value-of select="name" />,

Does the Data element have both an attribute and a child element both called
"name"?

>             <xsl:value-of
> select="ExtendedData/Data[@name='location_name']/value"/>,

Does the Data element have a child called ExtendedData?

Hope you're starting to get the message. Paths follow a route from A to B,
and they won't select anything if you don't know where you're starting from.

Michael Kay
http://www.saxonica.com/