Researchers have reviewed the diets of the top 9 health bloggers in the UK, so determine whether their diets and advice are healthy. Only 1 met the criteria, which is interesting:
news.sky.com/story/dieters-...
I'll obviously qualify this, that we don't know whose sites were reviewed, and we also don't know what the criteria for rating the blogs. The only person to pass was a qualified nutritional therapist, so that helps narrow it down a little!