It's quite popular, actually, both here and in South Korea. It's just another example of how poor man's food is getting all dressed up and served to the rich. Things like organ meats and caviar are considered delicacies now, but it used to be the poor people who got the stuff as discards, and had to try to figure out what to do wth it. I actually love spam on ramen -- reminds me of my childhood.

You can look at it as an optimist too: sure, the dish started out as a dumpster-diving expedition, but see how far it's come!