I have a noteworthy blogs tag on this blog that I sort of forgot about, and haven't used in years. But I started reading one recently that's definitely qualified for the distinction.
The Microbiome Digest is written by Elisabeth Bik, a scientist studying the microbiome at Stanford. It's a near-daily compilation of papers and popular press articles mostly relating to microbiome research, split up into categories like the human microbiome, the non-human microbiome (soil, animal, plants, other environments), metagenomics and bioinformatics methods, reviews, news articles, and other general science or career advice articles.
I imagine Elisabeth spends hours each week culling the huge onslaught of literature into these highly relevant digests. I wish someone else would do the same for other areas I care about so I don't have to. I subscribe to the RSS feed and the email list so I never miss a post. If you're at all interested in metagenomics or microbiome research, I suggest you do the same!