I use a trick Merlin Mann mentioned in one of his podcasts, where he prefixes each note title with a category. So I have life, work, snippets (for code), and a few others.
But I rarely browse, as the search functionality just can't be beat. Some example notes are
- trip planning (hotel, flight info, museums) - meeting notes at work (tons of these) - electricians I've called to get quotes from - list of conferences I want to attend this year - names and phone numbers of my neighbors - gift ideas - favorite wines - favorite quotes
I have the app bound to command-shift-tilde so it's always very easy to access. Then I use the app Notesy on my iPhone which searches just as quickly.
What I like best about this system is
- super fast search - quick synching - plain text (not some proprietary locked in format) - keeping (almost) everything here means I don't need to load up different apps (a meeting notes app, a wine list app, a snippet app) or think about where to store things