DISQUS - Disqus is a global comment system that improves discussion on websites and connects conversations across the web.

Quantcast Measure - Quantcast Measure provides free cross-platform audience measurement for a mobile app, website, network or platform.

Reddit - Reddit gives you the best of the internet in one place. Get a constantly updating feed of breaking news, fun stories, pics, memes, and videos just for you.

Affinio - Affinio is an advanced marketing intelligence platform that leverages the interest graph to understand today’s consumers.

Facebook Comments - Facebook comments plugin lets people comment on content on the site using their Facebook account.

Talkwalker - Talkwalker Consumer Intelligence Platform: built for speed of insight, ease of use, and data democratization