I'm wondering if anyone else uses Google Apps on a daily basis? I've recently started using Google Reader, Google Docs, and Google Notebook regularly. I've always used Google IG for my homepage. I really like Google's apps and love the fact they are web based so I don't have to worry about backing up or making sure I can use them on different OS'. But, I hope they keep developing Google Docs, because I see great potential in that app. So what Google Apps do you use regularly, if any at all?