i think that your afraid of having mistake for what you going to say but i think its alright to have mistake cause your not a native english speaker,if i am your chat mate i will understand instead of anoying i rather help you. cowboy...

Maybe you are a "visual learner" , you learn through seeing not through listening. It needs seeing the someone's body language and facial expression to fully understand the content of the words. ( It's the type who thinks in pictures and learn best from visual displays) - It's good to have a closer friend (not virtual) to practice the English language together, then it will be easier with your chatting friends. Well, it's my problem too, so hard to open the mouth, so I don't chat anymore :D :D. Not give it up !

Try not to get so nervous. Don't worry about making mistakes if that's your fear- they will understand. Just remember every time you talk to an English speaker your English is getting better. ^^

Hi... Need to work on your confidence... Imagine to try to speak to a friend...

If you're chatting, you're opening your mouth. If you don't open your mouth you can't be chatting with anyone. Your question doesn't make any sense.