points in the play.  When Rosencrantz and Guildenstern showed up Polonius seemed very anxious to leave.  He seems to have a weird idea that Hamlet's insanity could be contagious. 
       Rosencrantz and Guildenstern are very vague when telling Hamlet why they are thre.  That instantly gives Hamlet a suspicion and he confronts them.  Hamlet begins to sound upset and they confess to what they were up to.  The communication between them as friends is week, almost like they don't trust each other.
       The King has an interesting way of communicating with people.  Depending on the person he will use his "charm" to manipulate them.  He did some good sweet talking to get Rosencrantz and Guildenstern to spy on Hamlet.  It almost like Claudius tells Polonius exactly what he wants to hear at the time.  He seems to manipulate Polonius to get him to do little "side jobs" for him.
       Overall, all of the characters use methods  of communication to manipulate each tother.  The lack of communication between characters affects the relationships throughout the play.  So, depending on the circumstances it could be good or bad.