There is so much information out there that its getting difficult to keep track of things. This is where content curation sites comes in. However, some bloggers are using these content curation sites to curate their own content for backlinks. But ideally, it should be used wisely not just for your own links but to collect a list of other people's blog posts so that you can get back to them and comment or see what's happening in your niche. These sites will allow you to create an active social presence on multiple social networks and media sites. It makes sense to create a kind of socal hub. It's all about finding, collecting, organising and then sharing the relevant content with your brand and niche's audience.
http://www.target-info.com (WordPress plugin)