Conrad says: Moodstream is an online tool that allows you to browse imagery and music based on keywords or moods. What you see and hear matches the particular mood and can be dialed up or down in a host of ways. Its a great way to find inspiration.
Getty Images has a customizable home page for you, too, where it aggregates latest tools, galleries, and ideas based on your selection of featured content on its site.
I've used an image from Virtual Tourist for this blog today.