Seems that there's no way to edit or delete bookmarks and tags at the moment. Would be helpful to have these features...
To illustrate: I recently created a bookmark (http://slashdot.org/~gbognar/bookmarks) to help me get straight to the content I want.
After creating it, I realised I'd be better off with a different URL.
But I see no option for either editing or deleting the existing bookmark, so now I'm stuck with something I don't really want.
Thanks,
Gabor