Social Pro Daily Facebook: We’re getting better at measuring the 20 percent rule By Justin Lafferty December 31, 2013 Justin Lafferty Recommended articles {"channel":"elasticpress","title":"Recommended","post_types":["post","page"],"lineup_id":"54851","since_qty":30,"since_time":"d","until_qty":0,"until_time":"m","q":"","num_posts":0,"vertical":"performance-marketing"}
