The BBC has posted an interesting story about how people in Japan are resorting to dating by blood type (you know, A, B, AB, O and all that). According to Japanese beliefs/culture/whatever, different blood types have different personalities, so knowing the blood type of a potential spouse can be a good indicator of how well the two people will get along.
I always wondered why author-provided profiles of anime/manga characters listed blood type, which seemed like such a random stat to mention. Now I can say that I am a bit wiser on the subject.
The article mentions "The received wisdom is that As are dependable and self sacrificing, but reserved and prone to worry." I happen to be an A-, at least according to my New York Blood Center card, and the description is pretty accurate, I think.
However, the whole notion is quite preposterous as the article goes on to discuss. From a slightly more scientific standpoint there may be basis for a genetic predisposition to some traits, which I extensively lampooned in my story, "Shidduchim of the Near Future: Don't Wear Genes on a Date."
Despite the inherent chukas-goyim aspect of all this, I really hope that shidduch crazy sectors of our society never catch onto this nonsense. Otherwise, we'd have yet another silly thing to add to our shidduch research checklists.
P.S. I linked the printable version of the article because the regular website had a not-tziyus (as in unclothed) drawing in one of the suggested article icons at the bottom of the page. The picture could easily have been cropped to be more modest, but I guess it's true when they say that "sex sells." What a world we live in...