It's only really worth it if you have no better way to connect to the internet. You can't copy and paste nor can you do quite a few other things. (Do you know how hard it is to hyperlink when you can't copy and paste? >.<)
Yes, you can. Haven't you ever wondered what the USB ports were for on the back of the console? ;D
Yes, it is pretty darn nifty considering it's my only source of internet. ;.;
Well, it's goin' I suppose.
I'm forced to use the Opera browser on the Wii in order to be on PC, but it's actually not that bad if you have a keyboard plugged in. ;D