Should I expect increased traffic if I optimize my images?

Matt Cutts from Google has been producing daily videos answering questions from the SEO community. Many of these videos have useful information for all levels of SEO. I wanted to share Matt’s most recent video and then point you to his other videos.

Liam from Ireland asks:

“How does Image Search traffic compare to Web Search traffic? On a busy site with badly named images, should I expect an increase in traffic if I give all images descriptive names?”