Don’t treat every newcomer the same.
This is a list provided by Discourse of newcomers to our community (names cropped):
Which do you think most deserve personal attention and a great welcome to tip them into being a regular contributor?
You can waste a lot of time on members who join to satisfy curiosity.
Far better to spend that time on members who have already invested time in you. They’re the ones most passionate about the topic and most likely to become regular members.