It is not only for relaying information. When you meditate and feel the energy and love of your higher self or a guide, you are channeling. You are channeling their energy, even if you do not receive a conscious word or thought from them. Most people channel and receive guidance and information from their higher self or a guide and are not aware that they are channeling. Many people receive information or guidance in the dream state or through sudden inspirational thoughts.
Some people channel while they are working on art, music or other creative expressions.
Most people experience this form of channeling in their everyday lives. People have always been able to channel. It is not a new or recent phenomenon. The Bible is full of channeled material and channeling experiences. All people are spiritual beings who are a part of a very advanced higher self.