Find a language partner

The Beijinger: personal classifieds posted by people normally living in China, looking for a language partner
Meetup: you can join different meetings or write to members. Organize a Chinese language meeting wherever you are, and practice the language with others.
Couchsurfing is another way to meet other people, whether those who live near you, or travellers. Use the website to contact Chinese speakers all over the world.
Skype Community: find people looking to exchange Chinese for a language you speak well or post that you are looking.
Conversation Exchange
The Mixxer