Good communication skill only can make the listener/reader/observer understand correctly and with the indented effect what we want to communicate.
Recently I saw a videoclip which showed how our dents, even some of who scored high grades in languages, did not possess proper communication skill and hence could no succeed in interviews for jobs. Selling new ideas and finding a sponsor also needs good convincing and hence good communication skills.
There was a young man in our mohalla. He had borrowed huge sums from various people. We would see people (who'd lent him money) coming to his home for asking about their debt. They would complain to other people quite angrily and when any of those money lenders would come his home and would knock at the door. He would come out and would take him in but after meeting he (the moneylender) would come out of home with him quite happily. An interesting aspect of that borrower was that he would not run from meeting money lenders, he would always convince them. without giving them any money.
What is important in communication is - " Always respond to a call immediately". Never delay, never ignore, and be attemptive. This is what being taught in the school of communication.
No life without Sun
These days how you present yourself is very important. What you know is not important these days but how you present yourselves is more important. Our way of communication should be such that the receiver will get the message what you want to convey.
In this present competitive world, many people are getting qualifications and looking for a job. But people who have professional skills, as well as communication skills only, are flourishing in their careers. These days many online institutes are coming which are training the people to improve their communication skills.