I thought I'd tried most of the major web 2.0 sites but after being referred to the Web 2.0 awards at Seomoz.org. Even though they were announced back in March this year there are a lot of sites on their I haven't tried.
I have to thank Chi Howe of Pageflakes.com, the winner of the 'Start Pages' category for referring me to the above site. I took a look at Pageflakes and was very impressed, especially after being recently disappointed after adding too much too my Google Personalized page which subsequently became very slow and unusable. Pageflakes is clean and very usable. I'll certainly be playing some more with it as well as trying out some of the other award winners and honorable mentions.