Is there a gadget like psp or ipod in which we can surf the internet,play games on facebook, play songs (cont)?

Ipad doesn't support ADOBE FLASH (i e many facebook games, streaming sites wont work. ), what you are looking for is a full fledged tablet like Archos 9, it runs WIN 7 OS. You can do pretty much what you can do on your computer. Or may be Archos 5/7 they support Flash 9.0 version, so many flash games should work.