2010 Jun 08. We're finishing up BookMacster 1.1, which will add the capability to automatically keep bookmarks in sync across multiple Macs in different locations, as well as multiple browser/clients. It does this via a Dropbox account and app, which are free and all Mac users should probably have anyhow.
2010 Jun 07. We've examined the behavior of Safari 5.0, tested it with BookMacster, and not found any issues.
People already using BookMacster can always get the latest version automatically the next time they use BookMacster by clicking in the menu BookMacster ▸ Check for Update.