how can blogs be shared?

The reason I am asking this question is because the 'shareability' of blogs forms an overlap with one of the features of discussion boards i.e. discussion boards are public. Sharing a blog makes it public, and depending on how it is shared offers varying degrees of interactivity to blog visitors.

For simplicity I am going to divide the reasons for having an educational (teaching and learning) blog into:
1. private - rumination and consolidation
2. public - sharing of ideas.

Since my blog is hosted by blogger.com I'll list the several ways to share blogs, or individual blog posts.

1. it will be appear in the '10 Most Recently Updated Blogs' list on fellow blogger's 'dashboard' (home) page
   
2. it will appear on the 'next blog' tab after you have published a post
   
3. a blogger can create a link to your blog within their blog
   
4. a blogger can list you in their external links menu which usually appears near the 'archives' menu. [Note to self: this template doesn't appear to have this. Must investigate].
   
5. RSS feeds. Blah, I know precious little about this other than it promotes the interoperability and reusabilty of the blogs - which is something one would think is highly desirable in the education environment.
   

NB: The first 2 only apply if you chose to make your blog public (select 'yes' to 'add blog to our listings' setting).

So, it is reasonably easy to share your blog, and make it publicly available either passively (1 & 2) or through a little effort on your or the person-who-wants-to-link-to-your-blog's part (3,4 & 5).