I know many of you have waited a long time for this, but wait no more -- you can now export your Google Bookmarks list to an HTML file!
>From the Google Toolbar, click "Bookmarks" > "Manage Bookmarks." This
will take you to http://www.google.com/bookmarks/ . Near the bottom of the left-hand side, you should see an option to "Export Bookmarks" (underneath "Manage labels")
Please note that this is currently only available for English.
Also Lesezeichen in eine html-Datei speichern und über den Lesezeichenmanager in Firefox importieren.
Sämtliche Angaben ohne Gewähr, da ich weder die Google-Toolbar noch einen Google-Account habe (und auch sicher nie haben werde).