The home pages gives access to four different search engines, which work in different ways.
Search this site using Google.
This will return search results for Spectrum games or publishers, listing download links where applicable, and links to any magazine articles (YS, CRASH, SU) which are stored in the SPOT database.
This searches the CRASH review database - see the reviews page for details.
This searches The Tipshop for hints, tips and maps and POKEs.