del.icio.us bookmark editing

I can't find a good way to edit my bookmarks on del.icio.us. I have to do it one by one. I have to delete/rename/add tags one by one, too. This is a pain. I wish it had an interface like Firefox Bookmark Manager, at least that way I can select multiple entries.
Pain.
By default, the imported bookmarks aren't shared either, so I have to go through and share all the ones that should be shared (which is all but my banking bookmarks, really).
So yes. This is a little annoying... but it now means that I will have a single copy of my bookmarks across my computers, so that's handy.
Of course it also means that I no longer use the bookmarks built into Firefox, which isn't handy at all. At least it seems that way at the moment.
I'm not sure del.icio.us is for me.

del.icio.us Bookmarks

Hmm... I started a del.icio.us account today, and am trying to get my head around using and organising it all. Maybe it wasn't a good idea to import all of my bookmarks... there was over 1000 of them, and doubtless most of them are crap. So I'm going to figure out the best way to clean them up...
and do they stay in synch with my Firefox bookmarks? Or should I just clean them up on del.icio.us and them import them into Firefox? Or vice versa, maybe?
Such dec.isio.ns...