A great post by James Shelley here that expresses an idea as about as perfectly as I can think of.
Time spent reading social timelines is time lost. Scrolling through a timeline is time consumed by the curated projections of other people’s lives, which are absorbed wholly and only at the cost of living your own.
Living in this idea I started today by deletiing Facebook and deleting all my old tweets. To be honest it feld weird doing both, but then I remembered this idea that timelines are time spent and pressed the Delete button.