Since 2010, when Microsoft and Facebook announced a partnership to build social search in Bing, Microsoft has added Facebook features to Bing such as indicating when websites that come up in search results are "liked" by Facebook friends.

Now, Microsoft has added another such feature called Linked Pages, which allows users to link websites related to them in Bing search results.

Here's how it works, according to an official Bing blog post: Users log in with their Facebook ID, grant Bing permission to post to Facebook, and then start linking.

The scary thing? You can link pages for friends too. Although -- OK, this makes it not so scary -- Bing will ask the friend for permission first and the friend has to grant it. And you can remove links either you or your friends have added about you.

It's all part of a move being made by companies such as Microsoft, Facebook and Google toward incorporating more social media content and context into online searches.