Para.4 1.Fuel self-esteem. 2The very act of posting something about yourself regardless of what you write-can boost your self confidence because you control the image you present to your network of friends,according to researchers.Para.4 1. Fuel self-esteem. The very act of posting something about yourself — regardless of what you write — can boost your selfconfidence because you control the image you present to your network of friends, according to researchers