> ...meanwhile, LimePC pops up again in an engineers conference, showing
> evidence that the products actually exist. But why they never get to first world market?

From your link:

"LinkBook: same as LimeBook A9 but with a Freescale MPC5121e. I think its called the LimeBook at www.limepc.com"

Seems this "Linkbook" labelled LimeBook has been released to South Africa meanwhile.

Press release:
http://www.vodacom.com/news_article.php?articleID=593

Website:
http://www.linkbook.co.za

More:
http://www.google.com/search?q=vodacom+linkbook+freescale
http://www.google.com/search?q=vodacom+linkbook+motorola [sic!]
http://www.google.com/search?q=vodacom+linkbook+powerpc
http://www.google.com/search?q=vodacom+linkbook