Good point, Kay! Turning content into presentations is wonderful. Slideshare, in particular, seems to get a ton of traction. There are many great ways to re-purpose content - it's important to stay away from duplicate content, though, since that can come back to bite you from an SEO perspective...
I confess that I'm not a big supporter of Paper.li and similar products. I did some interviews last month when I was preparing to write about them and learned that, not surprisingly, many use them for their own curation needs but it hasn't brought them business or credibility. There's no ROI.
Connecting content curation to ROI and revenue has always been the difficult part. True content curation should be very strategic and include a value-add where possible, not just passing along hugh volumes of information. It needs a warm body curator that is reading the content and curating only what is well done, and that fits their niche or strategy. Not to belittle anyone that sees a ROTI (return-on-time-invested) with them, but in my opinion, Twitter-based "newspapers" that collect by keyword or automatically from specific Twitter handles have no real value - especially since research has proven that most don't even read the posts they are curating. It is an automated feed that just adds to the noise volume without adding value.
Are you finding Paper.lie or Scoop.it valuable? I'd love your perspective, or hearing about any successes that have come about from them.