Influencer marketing Before the creation of internet, the advertisements were transmitted on television. Now, consumers have access to internet and social media platforms, so for brands is more difficult to reach them. The solution to this problem is influencer marketing. The influencer marketing is a relationship between an influencer and a brand. The influencer promotes the brand’s products on his social network, like Facebook or YouTube. Influencers have a particular relationship of trust with their followers. Sometimes they are experts in the field of their advisements. Other times they are not experts but they rely on the trust built in their community. Influencer marketing is a good way for brands to let them know, because now social media are very popular and are constantly used, especially from teenagers. Consumers follow a lot of influencers and through the influencer contents a brand can sponsor his products. But brands have to pay attention on this kind of marketing because the brand reputation depends on the influencer contents. It also is important for brands and companies have a profile on social networks, like Facebook or LinkedIn, to share their activities and products.