Safari will process a list of URLs and create bookmarks

Very Mac like -- hidden easter egg functionality.

Macworld: Mac OS X Hints: Easily open URL lists in Safari

... Click in the Bookmark column (to the right of the Collections column) to activate it, then hit Command-V to paste the clipboard’s contents here. This is where the magic occurs; Safari is smart enough to strip out all the non-URL text, leaving you with a set of brand-new bookmarks pointing to the pasted URLs...