In my opinion italki is the best site in the world!  You can use it to help others and receive help.  You could search for a few language partners in the language(s) you're learning and organise Skype or Google Hangout sessions to speak.

You could write about something in the language that you're learning and generally someone will correct it.

You could correct something that someone else has written in your native language. 

You could ask/answer questions about the language you are learning/speak natively. 

Loads of things!  Use it in a way that helps you and helps others.  That has worked for me!

Best of luck!

I have met very good teachers, and have had very nice lessons.