Right away I should clarify a couple things that TwitterSnooze does before you jump in. They do store your Twitter username and password during the snooze time in their databases. Also, they actually unfollows and follows a person based on your setting. it does not really hide their tweets, it removes them.
The idea of the service is when someone becomes overly chatty or maybe attends a conference. Keep in mind another side effect of using this tool is that the users is sent an email when you perform this action.
Now if you are going this far, you can choose any amount of days from 1-7, 10, 15 or 30. It then starts following the person once again.