Advantages and disadvantage of blog use

The new technologies have many advanteges and disadvantages talking about the "educational method". We´ll emphasise some points:

ADVANTAGES
* The people that use a blog, can practice in every moment in any place. For example, a normal person can use the blog with only a computer connected to web. The people can use the blog to any hour, and can assist it from their houses. The person who use the blog should be able to go at his own learn speed.

DISADVANTAGES
* You can't search an assistant for help. Nobody will check the work you made and your text will not corrected.