I don't think the idea of personality traits being influenced by blood type has been scientifically proven and that it remains, but I'll put up the general ideas of each blood type and see what you think:

Type O:
Type O's are outgoing, and very social. They are initiators, although they don't always finish what they start. Creative and popular, they love to be the center of attention and appear very self confident.

Type A:
While outwardly calm, they have such high standards (perfectionists) that they tend to be balls of nerves on the inside. Type A's are the most artistic of the blood groups. They can be shy, are conscientious, trustworthy, and sensitive.

Type B:
Goal oriented and strong minded, type B's will start a task and continue it until completed, and completed well. Type B's are the individualists of the blood group categories and find their own way in life.

Type AB:
Type AB's are the split personalities of the blood groups. They can be both outgoing and shy, confident and timid. While responsible, too much responsibility will cause a problem. They are trustworthy and like to help others.

I think I'm a type A, cus I remember when I was aged 11 and onwards that I was known for being a very good drawer. I'm not sure if the concept is true, but if so I'd say I'm type A.

I'm type A.
Fits me pretty damn well.

I'm sure my blood type is A, it suits me pretty well.

Type B for me.

It actually kinda works too...

Not accurate for me.
I'm Type O, but I fit the Type A description.

I think i migghtt be Type O. [:

I fit in type O pretty well, although I do finish most things I start.
Not sure what my real blood group is though.

Type A.

But I'm not shy.

Type AB:
Type AB's are the split personalities of the blood groups. They can be both outgoing and shy, confident and timid. While responsible, too much responsibility will cause a problem. They are trustworthy and like to help others. Yep...true

it doesnt fit me im type O but i have AB personality

That's really interesting. I'm not sure what I'd be, looking at that. I fit both A and B, and seeing as my mum is A, and my dad is B, I'm not too sure which I am.

I suppose that the concept is wrong, but who knows? Haven't scientists did some test research years recently?

AB?

I'm A. It sort of fits.

well my blood type is A. but AB fits me better.

idk i think i sound somewhat like A idk what i am for sure

same.

i dont know wat i really am but i would guess 0

i am either A or B im not sure

actually cant remeber what mine is either

Japanese are fucked up people

Im time O. Kindddddd of matches me

I'm Type O, but that description couldn't be further from how I am.

I suit type A, but I have no idea what my blood type is.

Yeah I should probably find that out. Erm.

dude i dont even know what my blood type is...isnt that sad lol

I'm A.
It's insane how much that description matches me.

I am type O, but that really doesn't fit me that well.

I dont even know what blood type i am lmao

i have to be B or AB. They fit me well =]

Type O. Somewhat right.
Wasnt this the korean's concept

Mines completely opposite of me.

http://youtube.com/watch?v=3-stKNkR2c0 (just skip the necklace part)
Same concept. All bullshit.