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So let's also link to the Kickstarter.

https://www.kickstarter.com/projects/petertreadway/acton-r-r...

I had the same thought. It's basically blog spam. Engadget adds a sentence or two.

>why is engadget linked here //

I'd guess that engadget is the news aggregator that the OP found the content on. HN should allow this sort of link, as a first submission, but add in source links if not given by the OP. [But HN don't seem interested in changing the interface at all].