Types of page rank

Hi….i  found  this information is new for me ,i dont know that in page rank also types will be there,so i am sharing with you all.
In SEO page rank is not so useful as earlier it was.
There are two types:

• Real page rank
• Toolbar page rank

Real page rank

• It is on scale 0-1
• It is updated multiplily
• It trigger daily

Tool bar page rank

• It is on scale of 0-10.
• It is based on log scale.
• It is updated randomly