Feedly, a feature-packed newsreader for the web (and iPhone and iPad, and Android), can save articles directly to a specific Evernote notebooks. You’ll need a Feedly Pro account ($5/month or $45/year), and once you hook up your Evernote account, the standard Evernote button then presents your notebooks as destinations for saving the current article.
If you stick with a regular Feedly account, the Evernote button simply sends to your default notebook.