Would a pause button be a great feature on some webapps?  RSS readers would greatly benefit from this.  As I’m writing this post there is currently a Woot Off in progress.  This means that my RSS feed from Woot gets about 30-40 items every 4-5 hours.  It would be great if I could just hit pause and then it skips the items that occur during the time period I specify.  

Twitter would also benefit from this. I follow many people who live twitter confences and other events that do not interest me.  This information fills up my Twitter client and I sometimes miss other tweets that interest me.  The only solution I have is to unfollow the offending party and then remember to follow them again the next day.  This is clunky and the ability to skip updates from individual users for a period of time would be a great feature. 

Any other web applications that could use a pause button?