You can tag your notes, even geotag them, to find what you search for even faster.
Evernote in a Nutshell:
1. Capture everything.
Chances are, if you can see it or think of it, Evernote can help you remember it. Type a text note. Clip a web page. Snap a photo. Grab a screenshot. Evernote will keep it all safe.
2. Organize it.
Everything you capture is automatically processed, indexed, and made searchable. If you like, you can add tags or organize notes into different notebooks.
3. Find anything fast.
Search for notes by keywords, titles, and tags. Evernote magically makes printed and handwritten text inside your images searchable, too.
You can also access and create notes from a mobile device like an iPhone:
Evernote is a great tool, easy to use, available on nearly every plattform (Mac,Win,iOS,Android,...) and the free service offers more then enough for what i need.
Download Evernote for Mac
Download Evernote for iPhone