If you are a native Spanish speaker who are looking to learn English, Verbling links you up with native English speakers through live video chat.
Verbling means free on line conversation exchange. You only need a microphone and a webcam and of course, to sign up.
So if you are interested in this way of improving English conversation, contact verbling.com and see how it works.
For clear explanation in Spanish: http://www.elpais.com/articulo/Pantallas/Trueque/lenguas/elpten/20110726elpepirtv_2/Tes