Stop making your boss and clients unhappy by trying to measure the ROI of your Social Media efforts. It’s quite obvious that different channels/content/keywords should be targeted to a different needs of users, depending on their current stage of Buying Decision Process. But what almost everyone overlook is that KPIs should also be chosen according to a stage.
There’s no silver bullet on the ideal Posting Density on Twitter. You’ll have to find your own sweet spot just like main world brands have. Some of them definitely know how to rock on social media, so you should model yourself on them in the best way possible.