the idea is to write a line, poem style, 
 and then the next member has to add the next line, making it rhyme with the one before.
 after 3 lines that rhyme, the next member to post, can change the last word (rhyming bit) as long as they follow on with the same subject.
  
  for example
  
  
 member 1 posts....
  
 I HAD A LITTLE DOG
 
  member 2
  
 I PROUDLY NAMED HIM POG
 
  member 3
  
 HE WENT AND ATE A FROG
 
  member 4,  can now change the rhyming word (dog, pog, frog)  but has to continue the same story
  
 IT MADE HIM VERY ILL
 
  member 5
  
 AND SO THE DOCTOR GAVE HIM A  PILL
 
  member 6
  
 AND THEN I GOT THE DOCTORS BILL
 
  member 7 
  
 continue the story, but change the rhyming word
  
 have fun x