&gt;Why should I care about the backing CA as long as all browsers accept it?<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;DigiNotar" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;DigiNotar</a><p>&gt;You can register up to 100 subdomains in a certificate and up to 5 certificates per domain&#x2F;week.<p>What if I want dynamic subdomains for my website? These limitations are absurdly low.<p>&gt;LE doesn&#x27;t offer any paid certificates<p>They don&#x27;t, but their partners do. If HTTPS becomes ubiquitous and necessary to host a website, they stand to gain a lot.