WordPress Social Stream is a plugin. At the website of the CodeCanyon.net of Social Stream, they have this to say:

WordPress Social Stream will combine all of your social network feeds into one single network stream or create a single feed for multiple social network profiles. Display using a filterable jQuery isotope powered Social Network Wall or a rotating feed list!

Can combine unlimited social feeds and create unlimited number of social streams.

Feed items also include Facebook, Twitter, Google + and LinkedIn share links to make your social network streams more interactive, help promote your social network posts and boost your traffic!