I use the Slimjet browser. I managed to get a packed bookmark checker extension that was packed from Opera to install in Slimjet. The problem is that it will remain activated only for the current session, and then Slimjet will turn it off after a restart, saying "This extension is not listed in the Slimjet online store". I can't re-enable it. Is there any tweak that I could do in the profile to get it activated?
How do people validate these bookmarks these days? The bookmark validators seem to have missed.