Why do I get trust requests from random people? Why does Massimiliano Mauriello or Yoshua Daely vote on all my tags? Why does Marcello Cividini label every famous person with "country star?"

Those guys do not know how to vote or are abusing the system to increase their Spock Power. Please keep in mind that these people do not represent the majority of Spock users. I'm sure that when Spock adjusts its computation for Spock Power, those guys will do that stuff less when they see their scores plummet.

Just ignore or reject the trust requests for now. Those guys are building a network or are lonely.

Yeah, some people will upload generic tags such as "Spock user" to get more points... or they don't understand Spock's concept of relevant searches.

This answer isn't as eloquent as Justin Brown's, but I hope it'll suffice.