Google's Matt Cutts posted a video yesterday explaining that "stitching content" is a bad idea. In short, stitching content is when you take snippets from various articles across the web and place it on a single page, even with linking to it.
Matt explains there is a difference between writing a summary on a topic by using sources. But you aren't simply copying and pasting those sources, you are summarizing them and explaining them in more detail. He cites Wikipedia as a good example of doing this.
But bad examples would be just copying and pasting quotes and adding links to those sources or not.
I joked on Google+ that isn't Google theoretically doing this with their knowledge graph? Basically taking snippets of content and putting it together in a box and heck, they aren't even citing the source.
Truth is, no one likes to read these types of stitched pages - that is indeed true. But the knowledge graph is user friendly and useful.
Here is Matt's video:
Forum discussion at Google+.
I should note, the image is animated but not in a mocking way. I really wish people wouldn't classify all animated images as funny. I just thought it was cool to show how Matt conveyed with his hands how stitched content for the web.