jrepin writes "A few weeks ago the FSF reported that Google had started blocking invites sent from non-Google Jabber servers. This was done as a crude anti-spam measure. Google have since rolled out proper anti-spam filtering for its Jabber service, and has removed the invite block. This was announced a few days ago in a public mailing list post. This means that users of all Jabber servers will once again be able to fully communicate with Google users."