I believe that they are using the full MTEntryBody in their feed rather than the excerpt; from the Default templates:
CODE
<description><$MTEntryExcerpt remove_html="1" encode_xml="1"$></description>
I believe that because that removes the html, it would strip non-valid characters. If the full Entry text is used, then that's not automatically gonna do it. I could be mistaken, but that's what it seems like.
I did a quick search on google, and found that extended characters like Ú are considered high-ascii characters and aren't valid XML. I *think* that the page I was reading meant that you could use the ascii code for the character and still be valid:
Ú = Ú
(found on
this page)
If you frequently use extended characters like this, you might want to find a feed template that uses the CDATA encoding on the entry's body. I use Lisa's
XML feed to have my content encoded with CDATA.
Does that help?
Kristine