Re: No cache shown in sitemap stats.

You won't get all stats on sub-domain level.
http://sitemaps.blogspot.com/2005/12/verifying-site-located-in-subdirectory.html

As for not ranking for your desired keywords, learn more about the
crawling, indexing, and ranking process:
http://www.smart-it-consulting.com/article.htm?node=163
http://www.smart-it-consulting.com/article.htm?node=166
http://www.seomoz.org/beginners.php
http://www.smart-it-consulting.com/article.htm?node=148&page=117
http://www.google.com/webmasters/guidelines.html

If an indexed page doesn't show a cached copy, that's no big issue. It
happens every once in a while. Well, and as long as a page isn't yet
indexed, there is no cached page copy.

http://perso.wanadoo.fr/meduseshoes/LaMeduse/sitemap.htm
You should remove the Google verification file from your sitemap. Also,
the second contact-link leads to your 404 page, which isn't meant to be
indexed (avoid content duplication, put a NOINDEX robots meta tag on
the 404 page and remove it from the sitemaps). Also I'd think of a real
domain, that's just $10 per year and a handful bucks for hosting, and
it will make promotion way easier.

Sebastian