If your hosting supplier supplies live chat support, you'll be able to speak to an agent in real-time and find out useful info or get a problem resolved in a timely manner. The basic advantage of using chat rather than calling to talk to a live person is that you need only a computer with world wide web access, so that you won't pay any fees if you're in another state or country. In addition, it will be a lot easier to copy and paste info like domain names, usernames or error messages i.e. details which are sometimes hard to provide to the other party on the telephone. The live chat is also a quicker way to contact the web hosting supplier's support crew as compared to using a ticketing system. What's more, in the event that some problem requires a little more time to be dealt with, you'll be able to do something else while you wait for support on the live chat, so you will not lose time - something that's impossible if you are on the phone.