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CTRL Search is a free semantic engine utility which allows you to generate automatically meta-tags, a text summary, and a set of news, video clips or images to be added as a complement to any post or article you are bout to publish.
The only thing you need to do to make CTRL-Search work is to copy and paste the reference content that will be used to generate the reference tags, summaries and related content and to select the features you want to use.
Free to use.
Try it out now: http://ctrl-search.com/blog/