"[A] substantial fraction of people, perhaps 30% of college students, exhibit many of the symptoms of addiction / compulsion."

"Use of Facebook that interferes with regular life, or amounts of Facebook use that exceed a person's desires/intent may indicate an addiction." "Between 1-10% of college students likely exhibit a serious degree of Facebook addiction, while an inclusive total of ~20-30% exhibit problematic symptoms." "People who are addicted to Facebook are more likely to be lonely, have lower well-being, have difficulties managing their emotions, and spend more time on (and be at greater risk of addiction to) other kinds of technology as well." [Are X% of people truly addicted to Facebook?]: "We don't know, but possibly not. Facebook isn't addicting in the same way as drugs/alcohol (which create a chemical dependency in the brain), but it could be addicting in ways similar to gambling or other compulsive behavior. But even on that basis, the rate of true addiction may be a bit lower than the estimates suggest... What these results do show is that a substantial fraction of people, perhaps 30% of college students, exhibit many of the symptoms of addiction / compulsion." [Are algorithms to blame?]: "Research hasn't addressed this. If algorithms favor content or functionality that encourages people to spend more time on Facebook, then it's possible that this will by its nature tap into addictive mechanisms. The result could be to make addictive/compulsive usage more severe and more widespread. But none of the above studies have examined this in any way."