it is important for a site to provide users, who are already there, an easy way to search. It complements navigation. Doesn't really matter if it's custom or ba

it is important for a site to provide users, who are already there, an easy way to search. It complements navigation. Doesn't really matter if it's custom or backed by something like google. Some random standalone search specifically built against another site is not that useful, but is a sign that the built in search is not as good as it should be.