There is Simplenote (http://simplenoteapp.com http://simplenoteapp.com), which is a pretty no-frills web app that also integrates with a number of native apps (

There is Simplenote (http://simplenoteapp.com http://simplenoteapp.com), which is a pretty no-frills web app that also integrates with a number of native apps (including Notational Velocity if you're on OS X).