Not OP but I run a business and handle the majority of interviews and hiring. I set up the beginning of my interviews just like OP does. If someone doesn't have social media, I honestly think it is a bonus. I barely touch my own LinkedIn... I'd also much rather an application come through our website than an ad. I feel like those who apply directly have a better understanding already of what the job will entail. If a candidate makes it through the first few interviews, we invite them out to observe and then participate in the role (to see what they think and how they like it). I can usually tell by then if they will be a good fit. It's been nice because occasionally a candidate will decide right then it's not for them and save us both a lot of time.