How do I add Google +1 to Addthis Button? I am using the Addthis Module version 6.x-3.0-beta2, the problem is that google +1 doesn't appear as one of the services. Anyone knows how to fix this ? Thanks !
There is a tutorial http://www.addthis.com/features/google-plus1-button

Anyway, +1 is not a sharing service, I'm not sure that Addthis will add this (like there is no Facebook Like button). You can use the Customize service that addthis.module supports to add code described here.