It fascinates me how often people rant at me about the rubbish on Twitter or Facebook, invariably delivered in a tone intended to convey their intellectual superiority, but apparently unaware that what they are describing is their network and that managing that network is their responsibility!
It's up to us who we follow and pay attention to and this takes work, either finding interesting people to connect to in the first place, or having the confidence to mute them or disconnect from them if they add more noise than signal.
Sometimes this feels uncomfortable and socially awkward to do but, as in real life as Jim Rohn once said: “You are the average of the five people you spend the most time with”.