What makes a person a Guru?

[Darren Sager]

There have been many forum posts here on BP about Gurus in this business, evaluating their performance, etc.  There are a number of active members of BP that swear up and down that they're not a "Guru".  So what is the definition of a being a Guru in this business?  

My thoughts are that a Guru is anyone that charges anything for their time or for you to gain knowledge from them.   Even if they only charge you $.99 an hour in my mind they're still a Guru.    If they didn't charge you I would consider them a mentor because they're sharing information.     Now there are some that would say they're not a Guru because they're not charging thousands for their time.  I respectfully disagree.  Charging anyone for knowledge, coaching, etc., gaining anything in direct payment for your time and not a partnership deal where you profit only from a successful deal you're a Guru.  

Thoughts?