Do you want someone to chat with who has perfect English, is willing to chat at any time of the day and will never get tired of your questions? Try Dave E.S.L. Bot, a service that will give you a month of unlimited chat time for only $10. Dave's the perfect English partner to talk to and has tens of thousands of words in his vocabulary bank. (Remember to always check a web site before paying for a product - this one has not been tested by us. Still, it is a neat idea!)
There are other free robot chats online. Rong-chang.com has one. Oliverbot is free also. Splotchy is a bit quirky but will talk to you if your computer is set up properly. And jabberwacky will "learn" conversations and responses the more you use him, thus getting more and more intelligent as you chat. You can even choose his emotions and taint his reactions!
One added plus: you won't be able to make lifelong friends with these robots, but you never have to worry about cyber safety issues.