A perfect time to pounce?

You're out on a night out, someone comes over to you, you chat, exchange numbers, and more importantly, share Facebook details...
It's over.
Without realising it, you already know what their favourite music to listen to is, film, book, hobby, food, job, school they went to, interests, religion, friends, where they live, who they know, what they do in their spare time, likes, dislikes, if they have twitter, who they are following on twitter, what they did last friday night, if they take a good photo, if they're MARRIAGE MATERIAL?
I read in an article recently, a university undergraduate from Cheshire, was quoted saying "One of the attractions of Facebook is that you can find out so much about someone before you even date them".
That sentence itself just shows the problem. Some people may believe it saves time? Or makes the process quicker? But why do people want that?
In terms of dating, Facebook seems to be a CV for people to display in hope that they appear 'cool', or 'interesting'. Facebook is a place for people to create a false profile which they can hide behind. I'm pretty sure the term 'dating', means going out socially, to get to know one another. And I'm sure that it helps with conversation starters, if you need them, but they know you know the answer to whatever question you are going to ask. It makes people lazy, and not interested, in being interested in another person to get to know them. And as if Facebook stalking wasn't already easy enough, a few months back, an application was launched where you can get your romantic interest's relationship status updates sent straight to your inbox. The 'Breakup Notifier App, lets users select people they want to 'monitor'. Perfect, you see a fit girl you've had your eye on for a while, whose posted her relationship status to single, time to pounce. So what its been 13 seconds? She can move on. I love the tagline that's been given for the app too; "You like someone. They're in a relationship. Be the first to know when they're out of it". Dan Loewenherz, the developer of the app, said when he launched the app and it's website, within 36 hours the site has been visited more than 700,000 times, and the app had been downloaded by 40,000 people. Facebook then crushed the hearts of the stalkers on Facebook, when the social networking site suddenly disabled the popular tracking app, but not for long, as over a week later, the app was restored as it wasn't breaking any violating or privacy rules. This only encourages the way things are changing.
I guess instead of using a dating site, people use Facebook as its easier, free, and you don't have to appear like your desperately seeking a relationship, even though you secretly are. As time goes on, I don't doubt the profile layout will include a section where you write what you look for in a partner? And what's your 'type'? Until then, you Facebook stalkers will have to do the research yourselves. Tip: Look what their ex's look like. Another tip: An ex, is an ex for a reason.