In Internet innumerable sectorial directories exist, sectorial vestibules, virtual communities and marketplaces (digital markets) in which our company can have presence. This presence can be paid or gratuitous, simply trying that it appears a connection to our page, thing that, additionally, it will provide to us, surely, a greater visibility in the motors search. On the other hand, also perhaps an advertising presence, but of this formula we will speak another day. A first which we must do at the time of implementing effective strategy of presence in this type of webs is to define what geographic markets interest to us. Once defined, we will analyze for each geographic market what sectorial, directory vestibules or virtual communities exist and we will value if they have sufficient traffic, and of the tipología of our public, to establish our interest in being present in them or no. Later we will value the conditions of this presence and will choose the most beneficial alternatives. In the case of the digital markets, places of interchange between companies, the analysis will have to be deeper, since in some cases can be a very interesting route to introduce to us in new markets.