Definition of mindshare: Having a company hold the public’s attention and remain top of mind.
For example, a few years ago KFC had a commercial out that included a high pitched shreaking noise throughout the majority of the commercial. A friend of mine complained about how annoying it was and how that marketing company needs to be fired. However, my friend fell in the trap. He remembered the commercial AND KFC – just what they wanted. KFC, in this case, had mastered mindshare.