I vastly prefer reading light text on a dark background - something I discovered when using MS Word in its "White Text on a Blue Background" mode many years ago. I find it much easier on the eyes.
This has led onto my habit of selecting text while I'm browsing so that the colurs invert to ones I find easier to read. And eventually to my current redesign of my journal colours. Which isn't total (I've left a lot of the colours at default), but has taken most of the colours and made then light text on a dark background. It doesn't look in any way pretty (especially with some of the background colours still being light), but it's definitely easier on my eyes.
And because it works better than before it will undoubtably stay like this until I can be arsed to actually finish it off. Which means it will remain ugly for the forseeable future.
And, of course, it's taken me longer to write this than it would have done to just fix it.
I currently use Yahoo's To-Do lists as a notepad - somewhere to keep lists of books I mean to buy, etc. I mostly use this because my phone synchs with it (as well as the calendar, phonebookx, etc.)
What I don't have is a decent to-do list system.
What I'd like is a to-do system that allows me to have tasks, group subtasks (and sub-sub tasks) within them so that only the current things I have to do appear, defer tasks until a specific date (so that ones where I'm waiting until something else happens don't appear on my list until that date has passed), attach notes to each task and works via the web (so I can access it from work and home).