Ask HN: Are curated email newsletters a good idea?

I am exploring the concept of adding user-curated sections to my fledgling site, Talentopoly.com. In a nutshell the site is a place for programmers, designers & IT folk to share links to what they're discovering online. Yes, it's similar to HN. But that's a different discussion. By far the most popular feature of the site is the weekly "best of" email. The top ten most popular links get emailed out each week. I'm thinking of expanding on this concept and allowing users to curate tags. For instance, 1 or more users could sign up to curate the PHP tag. They would be able to add links that were posted to the site under that tag to a curated list that they could then send out as a newsletter. Those users who have subscribed to that tag would receive the newsletter.

I really value the feedback ideas get here on HN so here are some of the things I'm questioning. I'd love to get some critique of these ideas going in the thread below.

1) Should I limit the curation of a tag to 1 user or allow many? 2) Should the newsletter list the curators, thus giving exposure to those doing the work. 3) Should I mandate a max or min frequency to the newsletters? For instance, should the curators be poked if they haven't sent out a newsletter in over a week? 4) Is this something you'd find interesting and would sign up for? 5) Should I allow curators to enter their own descriptions for the newsletter or just include the link and title in it?

Thanks in advance.