OK

If you services like Gmail, Google Reader, Youtube, Google Videos, News sites etc. you can now access them through one interface at iGoogle. It's amazing how effectively they've integrated all of it. You simply need to login once and all your services are available. You don't need to go to each services' web page.

I find this highly convenient and time saving. Kudos to the people who've thought of this. There's even a mobile version of this. Unifying services and 'cloud computing' are all the rage these days.