several good free blog site for link build as below:

Blogspot.com
Blogsome
Edublogs - teacher and student blogs
Blog.com - What’s your story?
blogSpirit - Create your blog on blogSpirit
http://www.netcipia.com/xwiki/bin/view/Main/WebHome
Open Diary - diaries and blogs from around the world
tBlog: Free Blog Templates! Blog Hosting!

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