Websites for practising speaking English

[Competent]

I believe the following websites are good for practising English, in particular guided English conversation:

todays-talking-topics.com
speak-english-today.com
eslgold.com
free-english-study.com
freeeslmaterials.com
englishclub.com

I'd like to know your opinion about the self-study course in spoken English on freeenglishnow.com.

Do you know some websites or other aids (books, etc.) for mastering English that you find special and most important especially for advanced learners?
What online English courses do you find best?
Exchange of information would be of mutual benefit to us. Maybe you are looking for some information on issues of English that are of particular interest to you.