I'm dismayed at the low levels that are reported. History is an important subject. Books on historical topics generate lots of sales. One would think that history delivered via the internet would generate lots of hits. The members shown on this group is small while I am sure the daily view are much less.
Another indicator of low engagement on the internet is the aggregator sites. Just google history blogs and you see on the first page "Best of" links. These link to pages that were last updated years ago and/or else themselves award "best" status to blogs/sites that had not been updated for years.
Another way of finding history sites is through the History Carnival. Sadly that site has deteriorated to a click of insiders.
My modest suggestion: through social media sites such as this one, we should agree on criteria for sites which are recognized for excellence.