How Prevalent is Cheating in Poker?

What is the current state of cheating in poker? Are things like preflop charts and HUDs considered cheating - and if not, should they be?  Doug Polk sits down with poker pro Olivier Busquet to flesh out a heated discussion that started on the wonderful website Twitter dot com. 

Timestamps: 
0:00 - Intro 
5:52 - Olivier Joins, discusses preflop chart opinions 
9:38 - History of preflop charts 
13:28 - Lack of transparency in poker industry
 23:45 - HUD use 
24:50 - Who should be responsible? TOS evolutions 
44:32 - "Fair and Square or Cheater There?" 
1:08:05 - The slippery slope of pre-flop charts and the bigger fight against RTA 
1:14:30 - What is good for Rec players
 1:19:46 - Who is hurt most by preflop charts 
1:24:00 - Doug and social media 
1:28:20 - Olivier's history playing HUSNG