To delete an app, tap an app and hold your finger down on it until you see all your apps start to shake (minus the four in the dock area). You will see a small x in the top right corner of each. Simply tab the
X to delete the App and when you are finished deleting apps, hit the
Home button to get the apps to quit wiggling.
I'm on the main page of Apps, where it lists all the Apps. I have the ones I don't want anymore unselected, so they are no longer on my iTouch, but when I right click, nothing happens.
And it is simply a thing of adult themes for the App and I'd rather my kids not have the opportunity to have access to it.
Unselecting the apps means that they won't be synced to the ipod, so that's good.
To remove the app from itunes goto the main apps tab (with your ipod disconnected) and find the app you wanted deleted there. Then right click on it and you'll get the option to delete from itunes.