How to use Online Accounts like "Facebook" ?

I couldn't find the answer because ever single thread in all forums are about "hack".So,asking... how to USE Facebook in Kali Linux 2 ? Not hack... I logged in my Facebook and Gmail accounts.When I open "Contacts" in menu,I can see my gmail contacts.When I click an e-mail,it opens terminal.Using terminal for e-mail? Whatever,I couldn't find anything about Facebook.

SUMMARY:
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As in this image,I turned chat "ON".Is there any desktop app that allows me chat my friends in Kali 2 ? If yes,where it is ? Or I can only e-mail my friends using black primitive terminal screen ?