In addition, intermediaries are now also generally understood to include Internet portals, software and games providers, those providing virtual information such as interactive forums and comment facilities with or without a moderation system, <answer>aggregators</answer> of various kinds, such as news <answer>aggregators</answer>, universities, libraries and archives, web search engines, chat rooms, web blogs, mailing lists, and any website which provides access to third party content through, for example, hyperlinks, a crucial element of the World Wide Web.
News, universities and libraries and archives are examples of what?
aggregators