Member Tips LogoHere’s a secret to an effective LinkedIn profile, according to the website Many people assume that a professional headshot is needed to get results. However, studies show that looking “likable” translates into being more approachable and making more network connections. Therefore, you should consider making sure your profile pic has one key element: a smile. In fact, smiles where you show your teeth have a 50% better result than ones where your lips are closed. Not photogenic? Skipping the profile pic isn’t an option. LinkedIn profiles with no photo get skipped over. In fact, having a photo automatically makes it 14 times more likely your profile will get reviewed.