Building a PLN is an important way to communicate with my colleagues, students, or parents about education. With colleagues we can share ideas or interest about our profession. With students we can share homework, extra study ideas, assistants with problems or question they might have on an assignment. Most important its another way to incorporate technology into your classroom. As for with parents we can give advise or answer any questions a parent might have on an assignment their child has. These are just some simple ideas on how to use a PLN. I'm sure there are a whole bunch of other ways to incorporate a PLN into my profession.
Now for the comment advice its always good to listen on others opinions or comments about a certain topic. A blogger can leave some good advice or sometimes be mean and leave bad or upsetting advice on your blog. But that's why we live in America...Freedom of Speech!