I ask for a way to give access to my friend without them having an account on word-press.com (cause having them to create one just for that purpose is annoying and not conviniant).
Answer: No I'm sorry. They must have a wordpress.com account.
The only way for a friend to have access to your wordpress.com blog is described here. To add someone who does NOT yet have a WordPress.com account > http://en.support.wordpress.com/adding-users/
As I see it, Word press have a partnership with msn (do they?)... so can't you find a way to enable eMail account (or Face book account) as a way to menage access to my blog? If it actually possible... can you please tell me how
Windows Live Spaces is closing down. WordPress.com [provides the ability to import your content and set up a wordpress.com account. The move is permanent.
WordPress.com does not provide email accounts. It provides only blogs. You can post to your blog by email. Please see here > http://en.support.wordpress.com/post-by-email/
If you wish you can use Publicize to post links and snippets from your blog posts to Facebook. http://en.support.wordpress.com/publicize/ There is also a Facebook badge you can use > http://en.support.wordpress.com/facebook-badge/ And you can enable sharing options on the bottom of your posts on your blog. See here > http://en.support.wordpress.com/sharing/