I've been using Italki since last year, it really helps me.
But what I'm noticing is that my speaking isn't growing up such my other skills.
So I know that it's harder find out native speakers to chat, so if you aren't a native speaker I think that we can speak to learn together, even making mistakes we will be able to think in English and start to create sentences in our mind.
Let's do it together? If you are interested, please let me know. I am doing a list of subjects about we could talk about. I would like to improve my English with voice chat on Skype or voice message on WhatsApp.