me_irl

That's traditional but today I think most people remember them from signage and logos, shops and boutique firms love having 4s in their names because it looks so nice old style next to another number. Like Table 42 or maybe 10th Street Bar where the 0 is old style, with the dot or bar under it. A lot of websites also use it in headers because it looks more sophisticated and old-money. I am not sure how many people read books and body copy anymore, but I like the idea that it still happens!