I would like to hear back from Evernote themselves on this idea. I could care less who owns the page, or how its constructed because I know software can at a minimum figure out the borders of such content and take a screenshot, manipulate as needed and post into the Evernote capture stream. Then easily enough make the URL available as an embedded link and maybe even capture enough metadata to paste with the image.
We are talking archive and functional use. I would appreciate some action take to capture both Twitter, Facebook and other content, even if its "hard". Just figure out the best possible way, including a psuedo screen shot and go from there. Thanks.