Just a spur of the moment opinion...but let me come up with a list...trading cards/games...meeting people socially...exchanging listed information on a specific

Just a spur of the moment opinion...but let me come up with a list...trading cards/games...meeting people socially...exchanging listed information on a specific field aka you make a list of great investors, one cellphone to cellphone tap and the other person has it...mmm hopefully that's good enough lol