An excerpt from an overview of some new Evernote capabilities for content publishers; this reminds me of annoying and short-lived attempts by a couple news-oriented sites to take content clipping control
By placing the Site Memory button on your site, you will control precisely what is saved into your visitors’ Evernote accounts. As part of the button customization, you define what region of a page is clipped and the title of the resulting note. You can suggest tags to accompany the note, as well as the destination notebook for the clip. You can even have your clips include automatic headers, footers, links, and attributions. In other words, you can make pages clipped from your site look great.
For an advanced description of what you can define, please read our Site Memory developer documentation.