I’ve been using Mozilla Weave for quite some time now, ever since I made the switch from Foxmarks. This is a Firefox extension that allows one to synchronize browser settings, including tabs, history, extensions, and passwords.  Another feature of this extension is OpenID integration using Mozilla’s OpenID provider. The problem is that the OpenID integration into Weave might be a nice little feature for people that are not used to it, but people running their own identity provider or using one of the many existing providers, like myself have to jump through hoops to use these instead of the Weave IDs. I’ve found a post that mentions an about:config setting called

extensions.weave.openId.enabled

One can set this setting to ‘False’ if you don’t want the Mozilla OpenID support.  As for the rest of Weave, if you haven’t tried it yet, do so. It works just great