OPML Support is a Firefox extension that adds support for importing and exporting bookmarks in OPML format.
OPML is a file type that is widely used to distribute lists of RSS feeds.
When exporting, you can choose to export your livemarks, bookmarks, or both. When importing a file, you can choose to import only the livemarks, only the bookmarks, or all of the links listed in the file. You can also choose whether to import/export links in their folder hierarchy.
These details are provided for information only. No information here is legal advice and should not be used as such.