I think KMC and the article have it exactly right. You can't network only to get work or a mentor. The way I think about it is that I want everyone I met, however briefly, to have a good impression of me. I could lead to nothing, or they could read my name again on a resume later, they could recognize me later (a not insignificant chunk of my work has come from running into someone I know right when they were looking for a stage manager). So, I don't really suck up, I only talk about my experience if it comes up naturally. I do let them know who I am, what I do; then I'm just nice. I try to be polite, have an appropriate sense of humor, and relaxed. I can't point to any specific instance and say "this is a time a got a job by being nice," but I do often walk into interviews with people who say they've heard nice things about me. Not gonna get me the gig right out, but it certainly helps to know you're starting with a positive impression.