In the first post of his blog Business, sex and technologies Blaž Kos wrote that majority of the companies are taking advantage of human weaknesses. These weaknesses can be presented by seven deadly sins: lust, gluttony, greed/avarice, sloth/laziness, wrath/anger, envy/jealousy, pride/hubris/vanity.
(In Slovene the sins are: napuh, zavist, požrešnost, pohota, jeza, pohlep, lenoba.)
Sins or means for enjoying the life? Depends on your levels.