Famous brands logos: Sign up and it is free. Maybe you are putting something together on computer and a famous brand (eg: Coca cola / Renault / Nike) is a sponsor or part of an event and you are struggling to find a clear logo: http://www.brandsoftheworld.com
Stock photographs: Sign up and most are royalty free. Need a generic photo of something, for a presentation or document? Please be kind enough to respect any restrictions/usage options, and share your shots too!! It's a great give and share site. http://www.sxc.hu
We continually scour the 'net for great sites, and will continually update this page.