If you are running the 0.9 version of Flock (type "about:" in the URL bar) then:
* Open up the favorites manager by going to the Favorites menu and choosing "Favorite Manager"
* From the File menu of the Favorites manager choose "Export..."
This will export your Favorites as an HTML file.
If you are running the 0.7 version of Flock then:
* Get an online favorites account, and enable favorite sharing. You can export your favorites from the service.
* Find this file in your Flock Profiles folder: flock_favorites.rdf. (See the previous item of this FAQ to learn how to find the Flock Profiles folder.) You can open this file using any text editor. Remove all extraneous information, leaving only a list of URLs. You can import your list of URLs into another browser -- Firefox, Safari, or IE.
Currently you cannot use OpenID authentication with Ma.gnolia. We have a bug logged for this and are aware of this issue. The problem is that Ma.gnolia's API does not support OpenID. We have talked to the folks at Ma.gnolia and it seems like they do plan to add this support in the future.
Why can't I import my favorites from Firefox after the initial setup?
Firefox and Flock are built on the same basic code. Part of that code doesn't allow for the migration of favorites from other Mozilla browsers while the program is running. That stinks, we know. We would recommend that if you have favorites you would like to import from both Firefox and another browser that you import the Firefox Favorites in the initial setup, and then import your other browser's favorites later.
There is a workaround to this if you have already finished the first-run importer. Since Flock is built to manage favorites from social bookmarking sites like del.icio.us and Shadows, you can upload the favorites to the service of your choice from Firefox. Then, run Flock and configure favorites sharing to use the account you just uploaded your Firefox bookmarks to. Voila! Now you have access to your Firefox favorites in Flock!