Blog fear

Take care before allowing some one to post on your blog or if you are writing something which is sensitive.
1)Prominent companies have sued their ex employeed for revealing their information and trade secrets.
2)Politics crept into blogging and people got sued for thousands that is they wrote about sensitive issues and they burnt for it.
Have good knowledge about what you are trying to write and then start up with blogging, always take care or ensure that you respect copyright principles of internet.
You can find this information in googles news page.