Dapsen said:
Definitely go for it,
but don't go to America, pick another country. A close cousin of mine had the same deal (student exchange program, aye?) and went to America... while she had some fun and met some nice people (along with a hefty amount of morons however), she said the education was
appallingly bad. They are also quite xenophobic as a nation and trust me, you'll get to feel it, it's not a matter of language barrier. Seriously, give the US a miss, besides, your other options all have more to offer.
France I'd suggest if you wanna learn/practice French. If not, and if you don't speak French, give it a wide berth, they're also quite xenophobic and often hate people trying to speak to them in English.
UK's ok, but they're also quite xenophobic, especially now during the recession, thousands of people are losing jobs and they're seeing foreigners still living&working there. They're quite diverse as a nation however, you'll meet lots of different kinds of people from what I hear (mate was recommending I look into it as I'm planning to leave the country when I get an opportunity to).
Canada is your best bet imo, assuming you don't have a problem with freezing your balls off ^^. Friendly people and they're pretty much as developed/progressive as the US. You might also be able to pick up some French while you're there without being pigeonholed into it... you'll find French speaking people all over the place but pretty much everyone speaks English as well, so you won't have trouble communicating.
Aussies... well, are you prepared to pay the nicest beaches tax?

Other than that, they're pretty awesome.
All in all, go, and go to Canada imo
