By default twitter shows only the twitter usernames in their application. With the following command it’s possible to enable to display the full name instead the twitter username.
When you use Google Notifier you will have noticed that your mailbox will be checked once every 15 minutes. You can change this interval with the following Terminal command.
Google Chrome automatically checks for software updates in the background. If you want to disable the automatic updates to reduce data traffic, you can do this with a defaults write command.
The Twitter for Mac OS X application has a secret preferences tab. This gives you access to options like: Show full names, Compose windows float over all windows, type anywhere and munch more.