Do you have an RSS feed? I understand why collecting email addresses is more attractive for providers of newsletter services like this, and it's true that people with RSS readers are a niche audience compared to people who will read emails, but from an RSS-user's perspective, I find email newsletters much less convenient, and end up unsubscribing from nearly all of them.
Edit: But good job on the curation! I didn't mean to sound so negative, I bring this up because I want to subscribe.