About 2: this sounds like what Firefox calls bookmark keywords (keywords have a feature beyond just being a textual shortcut to a bookmark: they can take an arg

About 2: this sounds like what Firefox calls bookmark keywords (keywords have a feature beyond just being a textual shortcut to a bookmark: they can take an argument if you include %s in the bookmark they point to [Firefox calls these keyword searches, since obviously it's mostly used for search engines]). I used to use them a lot, but now just rely on instant history and bookmark search.