While hard sellers will network with anyone willing to listen to them talk about their favourite subject (themselves), self-servers are only willing to network with those who they believe can help advance their careers. Once they target someone, they may also prove to be hard sellers.
However, if self-servers discover that the person they’re speaking with doesn’t have the professional clout they originally thought, they won’t waste another second before abruptly ending the conversation and searching for someone with the credentials necessary to further their career goals.