Advantages and disadvantages of learn english using a blog

I was thought about the learning process based on the use of a blog, and i found some advantages and disadvantages about this. For example:

• Advantages

1. You don't lose time in the traffic.
2. It´s more comfortable.
3. You can socialize with many people and learn about her expressions.
4. It's one of the best ways to practice.
5. You can use the more powerful tool of learning, the internet.

• Disadvantages

1. You probably don't have a teacher to correct your mistakes.
2. You have a lot of distractions, as a social networks, music videos, movies, etc.
3. With the blog, you can practice your writing , but your pronunciation need more practice.
4. Nothing it's compared with a personal conversation for the pronunciation practice.

Here is my ideas about this, now, i would like to know your opinion, give me a commentary! :D thanks for read!