Always will be glad to play online with someone. With bots, without doesn't matter.
For thoose who wonder why to use Discord I'll say that it's runs so fast! Skype is full of ads, lags, spy things.
Currently soon screensharing will be added in Discord, but what I wait it's VIDEO call, so it beat skype out completely.
Well, just check the official site of Discord. And it's crossplatform.