How do you organize your book marks?

Tweet

OK so I'm a huge "To Do" list fan and make it a goal to cross at least three things off my running list every day (even though it seems that about ten things replace those three on any given day!) Today I decided that I was finally going to organize my 100 or so book marks, many which are sites I use at least once a week if not daily. It's a task I've continued to put off because I just can't decide on a good system. Alphabetical is logical but by subject seems to be as well but I'm having a hard time with subject categories. Ninety-percent of my life is online and it's time to get it all organized. Any suggestions?