Google Calendar

I am aware that I give away my personal life completely to Google by using a variety of their services such as mail, calendar, maps, earth etc., but I do it because their services are useful! In this posting I will not discuss the dangers of giving away too much information to a large company (or to any organization for that matter), but rather the functionality of their Calendar system. I use Google Calendar because it allows me to syncronize all three computers I use to the same calendar and, as a bonus, to syncronize my mobile phone as well. And it works both ways, i.e. if I change something on one computer, it will change in the others as well as soon as I connect them to the internet and start up Thunderbird. The convenience of having the same information accessable everywhere is just, well, nice.