Techmeme duplicate content?

I’ve been to techmeme a few times and I see the value in the news that it gathers, groups, and sorts. But when it comes down to it, I don’t see much (any?) original content. It’s all snippets of news stories from other sites. Same applies to google news.

So, are these sites penalized for being dumb-aggregators because they predominantly show duplicate content?

If you have knowledge in this area, please share. Thanks!

Actually no. this one has something to do with attribution. As for as I know, Techmeme posts links to the sites where the original copies of its news contents come from.