You might think this is nit-picky, but think about someone coming into this codebase in a year. They are going to have no idea what `nubmerSubsNDigest` means. Don't abbreviate works in variable names. Another thing is that the value of this variable is not actually the "number of subscribers for no digest", it is an HTML element that contains that value. A better name might be `noDigestSubscriberElement`.