I think that sites like skype are best, where you can set up regular meetings to practice your listening and speaking skills.

Thanks everybody for answering)) Under the term "social network services" I ment all kinds of social networking services from twitter to myspase. And thank you very much for sites))

I think she means sites like italki. If so there perfect, its hard to make friends of same personal interest. these sites make it easy and quick to find what you are looking for. cons... spammers

Is this your home work?If so, here a 3 sites to help you # The Pros and Cons of E-learning for Foreign Languages 2 Oct 2010 ... The Pros and Cons of E-learning for Foreign Languages ... social networking sites such as Facebook to the foreign language you are learning. ... www.thetravelingscholar.com/.../the-pros-and-cons-of-foreign-languages-and-e-learning/ - Cached # When reading in a foreign language, how do the pros and cons of ... 13 Jan 2011 ... When reading in a foreign language, how do the pros and cons of highbrow .... How do people who work in the social networking space think of ... www.quora.com/When-reading-in-a-foreign-language-how-do-the-pros-and-cons-of-highbrow-compare-to-those-of-lowbrow - United States # what are the pros and cons of social networking? The cons of social networking is when is the right age to join Facebook and Myspace. ... Here are some of my personal pros and cons for people 18 and over. .... Online Math Courses · Early Reading Software · Study Foreign Language ... www.education.com/question/pros-cons-social-networking

I'm assuming that you mean Facebook, etc when you say "social network services". If you don't mean that, just ignore my comment. But anyway, these types of social networks are usually only used amongst friends or at least acquaintances. It's seen as awkward to request random people as friends, so I don't see how you can really meet strangers from across the world with whom to practice your language skills.