How to find the most popular content for a given keyword?

There are several Social Media Search Engines that help you find content that way such as IceRocket and others. These tools help you find mentions, content, and all the buzz about particular keywords.

If you want to search content details by competitors you should check out ahrefs they have some pretty neat tricks. They practically dissect the details of your competitors contents for you.

Hope that helps!

The first tool that comes to mind regarding the features you mentioned is BuzzSumo.

BuzzSumo looks for popularly shared content on social media platforms using keywords.

It also has many different filters.

People use this tool for link building, SEO outreach, and of course social media marketing.

With that said, you might want to focus on your top competitors.

Once you have a clear idea of your target niche, look for the top players in that niche by doing a simple search on Google.

Once you've identified your top competitors, you can load their domains into Quicksprout.com.

Quicksprout will quickly tell you which of their content is very popular on social media.

Once you have this information, you can then go to another tool called Topsy.com.

Topsy will tell you which Twitter users shared a particular piece of content.

The interesting thing about Topsy is that it will tell you which users are influential.

I hope you see where this is headed.

You need to reach out to influential people that share similar content that you are going to be building.

The key here is to create original superior content and have it ride the viral networks your competitors are using.

I can second Buzzsumo.com

Sadly BuzzSumo has come out of beta and is now charging a hefty per month fee. But they do let you do get some results for free. It's still useful.

you can use social media search engines to create content with the help of your keywords.

Buzzsumo is a great tool.