B2B sales: a lesson learnt the hard way (Also: How to sponsor an event).http://wesselkooyman.wordpress.com/2011/09/23/b2b-sales-a-lesson-learnt-the-hard-way-also-how-to-sponsor-an-event/ by danielionescu • 15 years ago 2 1 15 years agoWEwesselkooyman.wordpress.com