Why, “the web page” has already become “like, so 2009...”

So, if you're writing a webpage now, how are you preparing it for the 2013 needs?

I don't know what 2013 is going to bring me, nor does my employer claim to know. Will there be another financial crisis? How will the oil price behave? How many more (natural) disasters/wars will there be? Will Google and Facebook still be dominant, does their balance shift, or will be there be more parties? And if they are still there, what will they do? Will we still be competing with the same players, do we have world domination by then, or will we lose marketshare because someone else has an even better idea than we do? Which other markets will be important to us in 2 years? We don't know, so we don't know what's needed in 2013. Heck, maybe the page I'm working on now isn't even liked by our customers, so it will be gone by 2013 anyway. So, does it make sense to spend time now so there may be some time savings in 2013? Hell no.