The code above would annotate my Knowledge Graph box (if I ever reach such levels of stardom) with my social profiles directly in the SERP.
Enable sitelinks search box
This, I think, is one of the coolest additions to the SERP. On some sites, you can see a search box directly in the sitelinks. This search box is tied together with the internal search engine of the site, allowing you to directly search for content within the site!
To get this to appear, the syntax of the code in the Custom HTML Tag needs to look like this:
XHTML
<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "WebSite",
"url": "http://www.simoahava.com/",
"potentialAction": {
...