[jayro]

Hacker Newsletter is simply a weekly coalition of curated links. HN Digest would aim to provide a short summary for every article that makes the home page. So, if say fifteen of the articles on the home page look interesting to you, but you don't have time to read them all (because actually you do have work to do ;)), then you can just read the summaries for all but the two or three most interesting. Anyway, that's how I'd use it.