Comment by syphilis2

I believe this is true. But I also have found that sometimes the user experience is diminished when not "logged in" to encourage people to create accounts. Pinterest has a box that slowly covers up more of the screen as you scroll drown. Facebook has a login prompt box that stays at the bottom of the screen and occasionally expands as a reminder. Quora prevents internal redirects to new pages. With enough know-how these can be worked around but it is an effort and I often find myself making the undesirable choice between doing the work around, ignoring the content, or signing up for an account.