Impression is Definitely Important
As you have already seen the statistics, you should know by now that smiling in job interviews is not enough. You also need to maintain a good profile on LinkedIn and smile in your photos. Your social media photos can speak volumes and your recruiter will definitely be having a look at them before meeting you. Social media vetting is quite popular among recruiters and also 60% of them implement this in their hiring process.
Moreover, your smile will play a big role not only in getting you that job but also in maintaining a steady career path for you. It has been proven time and again that in almost every profession people with better appearances are often linked with higher wages.