How do you sell to clip art or stock photo companies?

[wienerdog]

I was wondering how a designer or photographer can submit work to sell to stock photo or clip art companies? Does one contact a buyer there, or do you just contact them and they hire you for work on a subject, based on your portfolio?

[sekula]

You can try with:
If Images - Royalty Free and Rights Managed images (http://www.ifimages.com/)

On homepage they say : "We are constantly looking for new contributions to our catalogue. Whether you are a photographer, illustrator, digital artist or an agency, we would like to hear from you."

[D-Zine]

istock.com ?

[wienerdog]

I'll have to check it out. Has anyone ever sold to them before?