The social web is increasing tremendously from last year or so and there is no constraint of any language. Social web is multilingual, according to a study in February 2010, nearly half the tweets in Twitter are in other language than English. Facebook has also seen such large number, they had already translated Facebook into more than 50 languages all over the world.
And if you are also a Twitter or Facebook user, it is quite possible that you get tweets from your followers or news feeds/comments on Facebook from your friends other than in English language. It happens with me also because I have friends from all over the world and they sometimes update in their native language. It is difficult for me to understand and I use different translation machine to translate updates other than in English language.