Hello,
This component is useful but there are still some bugs.
One in particular may have your sitemap show double entries. There is a fix here : http://koder.de/projekte/joomap/?cp=12 but the author doesn't seems to have it fixed in his "official" release yet.
Besides that, the job is done.

Simple to use but I had to comment out the $sef test to actually have SEF URLs with sh404SEF:
//if ($sef == 1) {
$link = JRoute::_($link);
//}

I was looking for a mambot that would allow me to embed google maps without editing html source code.

This one does the job nicely.

You might just want to take care that the wysiwyg editor won't include formatting tags such as bold etc when you insert your link.
To remove formatting, I usually copy/paste the code in notepad then back in the wysywig editor