I associate and would use Yay only as an ironic expressions of excitement, as in &quot;Two more weeks of working overtime, yay&quot;, but I have only found a discussion in an catholic forum as evidence that some people think the same way.<p>I don&#x27;t believe I have ever heard someone use &quot;Yay&quot; in a non ironic fashion, but I&#x27;m not from an english speaking country.<p>So you could easily imagine a situation where posts by popular kids would get likes but posts by outsiders only yays.