This article is extremely poorly written. If you look at the top graph, 0.05% of the 10,000 websites make use of the header. Of those, 61% had a value set to "

This article is extremely poorly written. If you look at the top graph, 0.05% of the 10,000 websites make use of the header. Of those, 61% had a value set to " * ". 0.05% of 10,000 is 5, so 3 websites had that header set to " * ". I guess 3 is just not quite as scary as saying 61%.