Did you ever wonder why you talk to somebody about the EcoQuest business and they are not interested then you later hear they sponsored under somebody else? The following clip explains this phenomenon by how advertising affects people.  It was written in 1885 but it is still true today. Today's advertising is more effective than it used to be so the pace is accelerated, in my opinion.

The first time a man looks at an ad, he doesn't see it.
The second time, he doesn't notice it.
The third time, he is conscious of its existence.
The fourth time, he faintly remembers having seen it.
The fifth time, he reads the ad.
The sixth time, he turns up his nose at it.
The seventh time, he reads it through and says, "Oh brother!"
The eighth time, he says, "Here’s that confounded thing again!"
The ninth time, he wonders if it amounts to anything.
The tenth time, he will ask his neighbor if he has tried it.
The eleventh time, he wonders how the advertisers make it pay.
The twelfth time, he thinks it must be a good thing.
The thirteenth time, he remembers that he wanted such a thing for a long time.
The fourteenth time, he remembers that he wanted such a thing for a long time.
The fifteenth time, he is tantalized because he cannot afford to buy it.
The sixteenth time, he thinks he will buy it someday.
The seventeenth time, he makes a memorandum of it.
The eighteenth time, he swears at his poverty.
The nineteenth time, he counts his money carefully.
The twentieth time he sees the ad, he buys the article...or instructs his wife to do so.

- Written by Thomas Smith in London (1885)