Google+ platform websites integration using the Google+ platform tag.
Let visitors recommend your content on Google Search and share it on Google+.
Facebook's Comments box lets people comment on content on your site using their Facebook profile and shows this activity to their friends in news feed. It also contains built-in moderation tools and special social relevance ranking.
Disqus is a networked community platform, reaching over 900 million people a month, 1.8 million registered communities, and over 300M active commenters. The service offers a networked comment system used to foster engagement and connect audiences from around the web. Disqus looks to make it very easy and rewarding for people ...
Content Security Policy is best used as defense-in-depth, to reduce the harm caused by content injection attacks.