Everybody knows how important are the photos on your website. They help building the image of your company, creating mood by using certain themes or colours & explaining things without words.

Here are some of the best royalty-free stock photo sites:

Stock.XCHNG

Whether you just want to browse our huge image gallery or want to share your own photos with others, this is the site for you!

Stockvault.net

Stockvault.net is a stock photo sharing website where designers and photographers can meet to share their images.

FreeDigitalPhotos.net

Thousands of royalty free photos for websites, newspapers, magazines, video and TV productions, iPhone applications, PowerPoint presentations, forums, blogs and school work.

PhotoXpress.com

Tired of paying for images? Sick of low-res images? The image you want. Free.

I personally use PhotoXpress because it offers high quality (although not always) pictures. Each user has daily limit of 1 free photo but you can increase it by becoming a fan of PhotoXpress facebook fan page (+4 free photos daily) and by putting your personal data on the website (+5 free photos daily)

For more royalty-free stock photos check this website.

Do you know any other websites? Which of them do you recommend and which ones you avoid? Why?