I was wondering about the technology used by Facebook and Twitter (those are the obvious and most popular ones). I have realised that when adding a status or a comment or subscribing to a conversation, the page does not actually post to server to modify the database. Actually, on click the page does not load and it seems like all is done on the client-side yet I believe that some sort of data is stored. How is this possible? Can anyone help since I would like to use this type of technology? Or they using jQuery? If yes, then how is the database modified?
Thanks for your help.