Is there anyway to block/unblock users on chat via an interface other than Gmail or Gtalk? I can't seem to find any client which does that.(Accessible via the web; not a desktop application.)
Unblock/block Google talk users
gmail;google talk
I don't think it is possible.https://www.google.com/dashboard/ here it shows you your contacts and it links to http://www.google.com/talk/ or http://www.google.com/contacts