1. A blog is an personal online diary. It is a chronological list of peoples thoughts. Blog is short for Weblog.

2. Blogs are different to normal sites as they allow people to share information and not just view it.

3. People use blogs to share thoughts and opinions with each other, this is useful as you do not need move to discuss things you are able to sit in the comfort of your own home and discuss a topic.   
 
4. Advantages - good way of sharing knowledge;   
                         increase the profile of the writer.

Disadvantages - they are hard to maintain;

                         people that blog often usually have little to say of interest.    

http://www.gerrymcgovern.com/nt/2004/nt_2004_08_23_blogging.htm


5. "Kathy Sierra, author of the innocuous blog Creating Passionate Users, was the target of such vicious threats and misogynistic insults that she canceled her keynote speech at a technology conference in San Diego, fearing for her safety."
"Egyptian blogger Abdel Monem Mahmoud was arrested in April 2007 for anti-government writings in his blog"
"In Singapore, two ethnic Chinese were imprisoned under the country’s anti-sedition law for posting anti-Muslim remarks in their blogs"


http://en.wikipedia.org/wiki/Blog#Political_dangers


6. People are able to express their opinions about a post and then they can create a conversation from the post, they can also ask questions about their blog or anything else going on in the world.


7.  Here is a picture of how to upload a gadget to a page and how to arrange it:

You can use this screen to change the background and style of your blog by pressing one of these buttons:

You can use thing page to create a post to share with other people or you can save it as a draft for your own personal use: 

This screen shot shows the page where you can start writing a post, you can change the font size or colour and even add pictures and videos to make your post more interesting.