With the rapid advance of technology, advertising has evolved. Marketers can track facebook users interests and provide them instant personalized advertisements. Most facebook users have caught on to this phenomenon, and most ignore the advertising. The advertising on twitter, however, is far more subtle. It has recently been discovered that advertisers pay twitter stars to tweet about their product. Advertisers like ad.ly claim that they’re trying to help users see the resources available to them: but at the same time they never state that they are paying celebrities to “share resources”. Charlie Sheen decided to make his twitter account after advertisers impersonated him to sell products. In today’s day and age people can instantly read a celebrities opinion, and marketers are using this to their advantage.