Social proof, a term coined by Robert Cialdini in his 1984 book, Influence, is also known as informational social influence. It describes a psychological and social phenomenon wherein people copy the actions of others in an attempt to undertake behaviour in a given situation.
So often when you look at a Church website or social media account it is populated by the things the Church is doing or more to the point the things the Church wants you to come and do with them. It's great and recommended to advertise your events in this way, you would be missing the biggest free advertising avenue if you didn’t, but is there more that could be done.
Digital marketing provides a unique perspective for measuring results. No longer is marketing to prospective customers a case of casting your line and waiting on them biting. Social media is awash with data and analytics that can help you narrow the window and capture the customers.