&gt; How much extra are you willing to pay to be able to use those symbols?<p>It shouldn&#x27;t cost anything extra to use those symbols in a name. In fact, it should be cheaper, because they won&#x27;t have to do checks on the input to determine if it&#x27;s &quot;valid&quot;. Just store and display the name using UTF-8 and be done with it.<p>No, sites don&#x27;t have any obligation to serve everyone, but in the same way, potential customers have every right to criticize the site and it&#x27;s poor implementation.