How do discussions get into 'Today's top discussions'?

@mantiz (103)
India
April 7, 2007 2:21am CST
..was just wondering how these discussions get into the page 'Today's top discussions'? Is it based on the number of responses? or is it based on the rating? does anyone know??
1 response
ltt330326
@ltt330326 (68)
• China
7 Apr 07
i don't know too...can anyone tell us?