Presentation by Paul Everett at the B2B Summit 2013, London. Uncut, with a whole extra bonus 6 or 7 slides.
Here's the first six sins (see the presentation for number seven!):
One: data: we didn’t know you existed
Two: Brand: you didn’t know we existed
Three: Content: we tried to appeal to everyone
Four: Calls to action: we left you on your own
Five: Sales alignment: no-one followed up the leads
Six: Focus: we didn’t have time to equip sales to sell