What did Jesus mean by a "worthy person", and a "deserving house" plus "the greeting" and "peace" to dispense when the Apostles found them and are these still applicable, today?

When Jesus sent out his Apostles on a training mission,  He told them to seek "worthy persons" (verse 11), give their house a "greeting" (v 12), and if "deserving", let their "peace rest on it" (v13)!

What charateristics made those visited, worthy,  and their home deserving?  What was the form of the greeting Jesus commanded? What is the peace to which our Master referred?  

Are these things Jesus Followers should look for in others and practises to follow when we find them,  today? 

Thanks in advance for your help,  Brothers and Sisters! 

Matthew 10:11 - 13

ESV - ¹¹ And whatever town or village you enter, find out who is worthy in it and stay there until you depart. ¹² As you enter the house, greet it.

Clarify • Share • Report • Asked March 10 2014 • Gary Patton