Jabber is an instant messaging protocol used by many IM networks including Google GTalk. Most multi-protocol instant messaging clients support Jabber on all major platforms including Windows, Linux, OSX and more. Popular clients include Pidgin, Trillian and Miranda. There are also web based Jabber clients you can use such as Meebo. Chooing to recieve alerts via Jabber gives you ServerMojo alerts that wont be blocked by email filters and typically arrive sooner.