Sometimes people see my Ayu tattoo on my wrist and ask what it is, I tell them it's a symbol of my favorite artist and they ask who it is and I say 'Ayumi Hamasaki' and I just get a blank stare because they have no idea who it is.
A good few of my friends have actually given her a chance and are casual fans of her now. The person I converted mostly is my girlfriend, though. But generally if it's people I don't know that well I don't bother explaining.
Generally, the people who are willing to give her a chance; I tell them her lyrics are amazing and easy to relate to and musically, she is one of the most diverse and creative artists you're ever likely to come across