You are going to block this site. This will do the following:
- You will no longer see this site in searches.
- Site will no longer see your site in searches.
- Site will not be able to comment on your site profile.
- Any comments this site has posted to your profile will not be displayed.
Are you sure you want to do this?
I regularly use XMPP with family and friends and it's alright. I'd like to add that XMPP does support voice and video calls as long as the server supports TURN and you have a compatible client like blabber.im (Android) or Gajim (Linux), but it's clearly not the focus. But once it's set up, calls work very well.