&gt; the claim [...] doesn&#x27;t hold up when the most popular app in the world forces uses to log in.<p>Strongly disagree. Facebook (which I assume is what you mean by &quot;the most popular app&quot;) was and still is _the_ social network. It&#x27;s success on mobile has been driven by massive network effects. As such they can force users to jump through hoops which are in Facebook&#x27;s favour because users want in so badly. That said Facebook doesn&#x27;t get a free pass on device permissions, which is why they use gradual engagement in Messenger like this: <a href="http:&#x2F;&#x2F;installclub.tumblr.com&#x2F;post&#x2F;82319976281&#x2F;double-opt-in-to-permissions" rel="nofollow">http:&#x2F;&#x2F;installclub.tumblr.com&#x2F;post&#x2F;82319976281&#x2F;double-opt-in...</a><p>But if you want to attack the leader, or simply grow your mobile user base, you don&#x27;t get the same luxury or network effects Facebook has. Yahoo! doesn&#x27;t have anything users want _so_ bad that they&#x27;ll jump through hoops to get it.<p>But anyway - another a great example of an app &quot;doing it right&quot; is Airbnb - they let you browse properties without logging in - see <a href="http:&#x2F;&#x2F;firsttimeux.tumblr.com&#x2F;post&#x2F;83588089909&#x2F;airbnb-ios-app-first-time-user-experience-the" rel="nofollow">http:&#x2F;&#x2F;firsttimeux.tumblr.com&#x2F;post&#x2F;83588089909&#x2F;airbnb-ios-ap...</a> for details - this gives people a chance to see what they&#x27;re getting before going through the pain of signup. This is the model Yahoo! should follow as their apps, like Airbnb, are primarily about the content not the social element