Recs.
Updated
Evernote is a cross-platform note taking and idea capture utility that automatically syncs to the company's cloud service. It allows you to easily save websites, photos, and text for later usage or collaboration purposes.
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SpecsUpdate
Pros
Pro Can include images, and snippets from the web or a whole webpage via web clipper
With one click you can clip part or all of any webpage, including text, images, and links. Especially for those who use Google Chrome, this web clipper is a very rich add-on. The “simplified article” mode strips all graphical overhead from the page before adding the information to Evernote. It's also possible to add highlighting, tags, etc. before storing the note.
Pro Powerful features for organising your notes
Evernote is designed to make it easy to keep your notes well organized, which aids in quickly finding/browsing old information. You can put notes into a single notebook and use search to access old notes, or if you're so inclined, organize notes extensively with hierarchical notebooks and tags.
Cons
Con No official Linux app
Evernote does not offer an official Linux app, although there are some third party alternatives available.