I’ve started to use tripit.com. It’s really handy service to have your trips organized. You simply forward all the confirmation mails you receive from hotels, airlines and travel agencies to [email protected] and it will be automagically added to your account. When it’s in there you can easily reserve seats in your plane. Look which seats or good. Get weather forecasts, maps etc. etc. Furthermore you can share your travel destinations in your network. So friends or business contacts can see that you are in a certain place. In linkedin.com you can also install the tripit applications so your contacts can see where you are going.
I’ve just started using it last week and put 3 upcoming trips in there and an old friend noticed that I was going to be in Barcelona the same days he’s there.