2015-05-23 update: I'm now using Pale Moon
I was originally going to replace Firefox for Midori, but I found enough significant issues with Midori that I'm not going to use it.
Instead, I'm going to streamline Firefox so that I'm relying on it as little as possible.
Exporting Firefox bookmarks ∞
Tested 2013-05-22 on Lubuntu 13.04, using Mozilla Firefox 21.0.
Bookmarks > Show All Bookmarks(or
Import and Backup > Export Bookmarks to HTML
Importing Firefox bookmarks into Midori [impossible] ∞
Tested 2013-05-22 on Lubuntu 13.04, using Mozilla Firefox 21.0 and Midori 0.4.3.
File > Import Bookmarks
click Import Bookmarks
There is no progress indication. Midori will hang while importing a large bookmarks list and the window will probably go grey. Go do something else while waiting.
Midori seems incapable of importing the large list of bookmarks I give it. It hangs for a while, then displays a partial list.