Embed this press release by copying the code below:

<a class="rwp-pr" href="http://rwire.com/204618">SiteTrail Report: Pinterest Advancing on Facebook's Market Share</a><script>!function(){var e="rwp-platform";if(!document.getElementById(e)){var t=document.createElement("script");t.id=e,t.src=("https:"===document.location.protocol?"https":"http")+"://publisher.releasewire.com/embed.js",t.async=!0,document.body.appendChild(t)}}();</script>

SiteTrail Report: Pinterest Advancing on Facebook's Market Share