In some sense, this article could be really racist, if someone believe this is just another scientific racism crap. But hey, I'm also attacking my own race, because I'm ( chance) not a multiracial being1.
People who belong to a single race are result of a very board inbreeding.
Inbreeding product offspring with higher chance of having
* reduced fertility both in litter size and sperm viability
* increased genetic disorders
* fluctuating facial asymmetry
* lower birth rate
* higher infant mortality
* slower growth rate
* smaller adult size
* loss of immune system function.
[Quoted from the Wikipedia article: Inbreeding]
Of course, this is a very board inbreeding, it's possible every marriage of one's parent, grandparents and so on are kept between nth cousins, when n is a positive integer larger than 6. That's only possible, because I don't have enough data to do statistic operations on them, but it's likely somewhere along the line, there are going to be very close inbreeding. But that's not the point, multiracials have ancestors does inbreeding too. Except they are experiencing less degree of inbreeding by being multiracial.
Let's define superiority as more adopt to natural selection, which most humans in developed countries does not experience. In some socialites (like US), there are laws protect the weak.
Single racial people have less genetic diversity than multiracial. It's true, because single racial people's gene pool are restricted to one race, compare to multiracial with 2 or more. Larger gene pool means high chance to adopt catastrophic changes. Just hypothetically speaking, there are 2 race of some space aliens, Alpha and Beta, if Beta are immune to a deadly and very contagious disease D-A because their genetic trait, in the same time Alpha is immune to D-B. Then it's possible that 2 disease will eventually kill all of those 2 race. Even if only one survives, the other race's gene pool (Like the gene allow fast body regeneration) can never be accessed, and that's a lose to it's entire species. Suppose, the Alpha and Beta chose to mix with the other, they will product offspring with immunity to both. (Because each gene could suppress the other, they can actually only product offspring immune to non of the disease, that would be too bad.) Both gene pools will be preserved.
In the human world, the above will not happen, at least not in our lifetime, I never heard of "Asians does not get AIDS". But it's proven that multiracial people have great traits helps them physically. [Wow, I actually learned something from AP Bio]
How many multiracial people are there in US? I don't know, but I can name some famous ones: Tiger Woods, Halle Berry, Kristin Kreuk and Keanu Reeves. Seems like multiracial people can be great at what they do.
Come on, the entire world should start promote the greatness of having multiracial children. Maybe it's just me, if I ever want to have kids, I want multiracial ones.

Ok, ok, everything I just said is just excuses, I started this topic because there was a topic in Gene Expressions about multiracial women's attractiveness.
The multiracial girls I have seen is generally more attractive than single racial ones. In percentage, 100% of the multiracial people I met in real life can be considered as attractive(my opinion), same not true for single racial ones. Beauty is in the eyes of the beholder, it differs from person to person, but there are the standard deviation, and I believe I'm in the ±1 range.
Here are some of the famous interracial girls I found attractive, and if most of you find them attractive, my point is proven.
Leah Dizon [Chinese+Filipino+French]

Maria Ozawa [Japanese+French-Canadian]

Tina Yuzuki/Rio Carnival [Japanese+Portuguese]

Two of them are AV idols, but hey, how can they not be noticed if their picture are shown in every large portal site in China (which at least prove most Chinese people found them attractive).
I don't know if multiracial guys are hotter than usual ones, if any girl who read my blog, please comment about it.
The main reason multiracial girls are hotter might be because the law of physics. When 2 people from different race mix, it creates entropy. The world are spontaneously moving toward higher entropy(by making guys attract to multiracial girls), unless there is energy used to prevent it from happening. The population of human race are increasing, more and more energy is needed to counteract the entropy, eventually, everyone will be multiracial, because unlike most chemical reactions, this one is irreversible.

A dialog between me and a person who claims he is multiracial, judge it for yourself.

*one~神~龍~Mino~夜神優斗: in this society
*one~神~龍~Mino~夜神優斗: MR are having advantages
*one~神~龍~Mino~夜神優斗: why?
*one~神~龍~Mino~夜神優斗: they can speak more then one language
*one~神~龍~Mino~夜神優斗: and
*one~神~龍~Mino~夜神優斗: they are having outstanding looks
*one~神~龍~Mino~夜神優斗: plus
*one~神~龍~Mino~夜神優斗: they are usually rich
*one~神~龍~Mino~夜神優斗: as for MR men
*one~神~龍~Mino~夜神優斗: they can have a nice job easier
*one~神~龍~Mino~夜神優斗: and they can attract more women
Mgccl: ...do you have any fact support that?
*one~神~龍~Mino~夜神優斗: yes
*one~神~龍~Mino~夜神優斗: cuz i am already one MR= =
Mgccl: ..
Mgccl: fuck no...

1. 1. My aunt says I'm 25% Jewish, but Jewish is not even a race, it's people belong to a religion.

I don't see the reason why ask a girl out because you will never find a hot blond that knows much about PHP...
but if you do, here are the collection of scripts...
Note: Please don't do too much PHP or you end up like this.

The straight forward noob version

echo 'want to go out tonight?"

Lame but useful, can be understand by almost...wait, any girl who is not mentally retarded. So this is actually doing nothing but:
-fake you are geek(to real geeky girls)
-you are a amateur geek(to normal girls)
-you are cute(Japanese girls...if you are white...)

Procedural + Conditional
Yes, now you are talking, at least put some procedural and conditional blood in your work.

if('will you answer 2 of my next questions with "yes" or "no"?'){
	$question='if my next question is
	"will you go out with me?"
	will your answer same as the one for this question?';
	if($_REQUEST['answer'] == 'no' || $_REQUEST['answer'] == 'yes'){
		echo 'I know you will fall for this...';
	}else{
		echo 'do I have to make a input filter?';
	}
}

a user input filter is recommended. This should be the most suitable way to ask both geek girls and normal girls that understand English.

Functional
..not y = 3x function.. a function like this... but don't use this to the OO PHP girls...

function wana_go_out($result){
	if($result==1){
		return 'we meet at....';
	}else{
		return 'just kidding, you look fat in your pants...';
	}
}

OOP PHP
If you are asking some OOP PHP programmer girl out for a date, with a pure procedural script, you can never make it. Unless she is a noob and does not think like the normal people, which is "OOP PHPer should be smug asses when compare to procedural PHPer".
this is pretty easy.. just make wana_go_out function part of the class...

class wana_go_out{
	var $return;
function wana_go_out($result){
	if($result==1){
		$this->return = 'we meet at....';
	}else{
		$this->return = 'why I'm I doing OO for this crap...';
	}
}
}

Don't send to procedural PHP girls... those ones will think you are trying to follow the "new way of programming" for the gay people...

some other technique you have to know:
do Obfuscation to the code:
if you want to date extreme geeks who does not think variable name have to be make sense.
Encrypt the code:
yes.. those public key things and such hardcore security things... if you want to date Asian convenient store owner.
Make it into a PHP virus:
polymorphic virus that infect all PHP files and echo out what you want to say, and possibly make you get into jail. Only think about that when the girl like wild men.
Use Google Map show the dating location
Yes, I know Google Maps [Could Have] Killed James Kim. But MSN and Yahoo! are not any better.
CAPTCHA check
you never know if she is a robot. She might work with you and do almost anything normal. but it will never pass some powerful animated CAPTCHAs.
XML-RPC
XML-RPC her server with messages, if she have one.
Last but not least:
write a 500 Page documentation for setting up a Unix Server that runs PHP.
another 5000 pages for how to understand your code.
Because:

"Programming today is a race between software engineers
striving to build bigger and better idiot-proof programs
and the Universe trying to produce bigger and better
idiots. So far, the Universe is winning."
-- Rich Cook

IMPORTANT:
For the PHP Bloggers, please don't tell any girl to click on your adsense!! Because Google(and god) owns the world and it will make you never Google any decent girl again.