Hello amal, It is not necessarily the best way ,it is rather a method among many others that help you learn. The voice chat will help you improve your pronunciation and speech skills. However you have to choose your chat partners carefully, preferably native speakers to get the best results. You need further more read ,write and do grammar exercises. You could also listen to french music and watch programs etc. Bonne Chance :)

The best way is to write your message in french to show your interest: "la meilleure fa�on d'apprendre le fran�ais est la voix de chat qui veut aider? "