Think of a roundup post as collection of articles, websites, or sources about a common topic. Roundup posts are a great way to add value to your audience by curating great content that is already out there online, instead of having to generate it all yourself. The key to a great roundup post however is not to simply link to other places but include your key takeaways from the content you are linking to. This way your able to make it your own. Link Here