Is there a good site to talk with people from German speaking areas to improve my German ?
When you are a gamer you could try to install your games in german and use the ingame voice chat when playing with german people. Another possibility would be speech recognition. When you own a Xbox One, try to control it with german speech commands.
If you only want to chat with words, you could search for open german irc channels, german forums or any other german chat.
Try knuddels.de, it requires email registration but it's a very popular German website for chatting.
If you like to improve your German, you should consider to watch the German news on ARD and ZDF.
The speakers are special trained to speak loud and clear with very good German.
There might be an IP restriction, but if you find a German proxy server, you can find a lot of German stuff in the ZDF-Mediathek.
If you whant to speak with Germans, I believe the best way is to get in touch via social media. You can use Knuddels.de or Jappy.de which are very popular teenage-dating-sites. The problem is that the spoken and written German you can learn there is very bad.
I would recommend you to use Facebook, think of your hobby and interest, translate them into German and serch for them. Find German groups whitch you can join. Speak with the people there, and invite them to chat with you. I believe, Facebook has a built-in voicechat function.