Event Logs: Busy Sponge

Ideas are welcome!

http://www.w3.org/2002/08/busy-spunge.html
Introduction

I spend a lot of my time typing things into various interfaces: such as a 
log of important/useful things I've done during the day, an outline of 
things I need to do, a list of interesting links and my thoughts on them, 
web site passwords, proto-ideas and scribbles, annotations/comments on 
things I've read, and travel information. Some of these things are stored 
in (different) html pages and some in (different) flat text files, and I 
use different editors/browsers for these files! I'd like to have a single 
easy to use interface for entering all these things. This will require a 
data store/model, an interface, and perhaps some syntactical conventions 
for easy freeform entry..

I'm not keen to have to design or build anything, if someone can make a 
recommendation to an application that does the job, all the better!
...