I Have a Question

A friend of a friend ask my friend a question other day she said if you can't explain some of your feelings out face to face.but certain things you are feeling or thinking should it be shared if you wanna just get it out like share it on here .or is it better just to think it and not actually sharing it my friend said she just didn't know what to say what's your view.my friend always asks for my opinion and likes to scope things out she's thinking of joining on here and her friend also.