Hi! Thanks for response. You get me wrong. I was not talking about Java, i just mean then when your projects scales to twitter/facebook level you will have to

Hi! Thanks for response. You get me wrong. I was not talking about Java, i just mean then when your projects scales to twitter/facebook level you will have to use different tools, and it's ok. Regarding Facebook, someone already replied about PHP. But i also should add, that Facebook use LOT of Java, just check their open-sourced projects http://developers.facebook.com/opensource/ http://developers.facebook.com/opensource/. At such scale its ok even to develop own hardware.