AD AGE: The common view that Facebook “likes” equate to brand engagement took a hit last month when the Ehrenberg-Bass Institute shared some interesting data with us. Researchers found that less than 1% of fans of the 200 biggest brands on Facebook actually engaged. Their conclusion was based on a six-week study of Facebook’s People Talking About This metric, with researchers considering the number as a proportion of fan bases. Only 0.45% of fans engaged, if you subtract likes to isolate for more meaningful activity, including shares and comments. This confirmed something many readers already suspected: Facebook fan bases and actual engagement aren’t the same thing.One of the more interesting questions arising from the study is whether the findings apply to passion brands, like Nike or Harley-Davidson, as opposed to ubiquitous products that, loyal as their audiences might be, don’t get folks lathered up at the mere sight of the logo. Though the short answer is that passion brands might get slightly more engagement, it’s not enough to throw off the overall findings. Looking at 10 passion brands — including Nike, Old Spice, Harley-Davidson, Porsche, Ford Mustang, Jack Daniels and Tiffany & Co. — the researchers found an average engagement of 0.66% The average engagement for the 10 brands with the largest fan bases was 0.36%. MORE