Possible Duplicate:
What's the shebang (#!) in Facebook and new Twitter URLs for?
Hello,
One thing that took my attention in some modern websites is the presence of '#!' symbols in their links, see for example twitter and Rapidshare links:
http://twitter.com/#!/SolidSnakeGTI
http://twitter.com/#!/SolidSnakeGTI/followers
http://twitter.com/#!/SolidSnakeGTI/following
This behavior is obvious when you're logged in twitter
http://rs431tl3.rapidshare.com/#!download|46311|44541812469|fairy_tgail_045_sd.mp4
What does these symbols mean, what it's called, how it works!?
Appreciated in advance Abdelrahman