48) Picturestation
http://www.picturestation.net/start/

Picturestation is a joint project between Screengang and Distinct that has over 6000 photos in its collection. It's a photo exchange site in which photographers get two download credits for each contributed picture accepted into the collection.

Registration is required as you can't download photos without contributing, but you get 10 credits after registering. The site also accepts illustrations. The site's license agreement explains how your photos and other photos can be used.

The nice thing about the site is that it's community-driven and this leads to a diverse collection of photos. The site's features include comments, lightbox (where you save select pictures), rating and e-cards. Discover photos by browsing categories, using the search tool, or getting a random selection of photos.

47) NPS
http://www.nps.gov/yell/press/images/

National Park Service (NPS) has over 9000 images available in the public domain for use, free of charge as long as you credit the photo as "NPS Photo" or "NPS Photo by (photographer's name)". The photos are specifically related to Yellowstone National Park covering animals, fire, geology, park structures, special events and more.

According to the site's FAQ, NPS has 19,000 images and plans to continue scanning and posting those that aren't yet online. Images are neatly organized in thumbnails on their category pages along with their file names and a brief description.

When you click an image, the site loads the full size of the image and you can right-click and select "Save as..." It's a well-organized site considering there are thousands of photos with many more coming.

46) FreePhotosBank
http://www.freephotosbank.com/

FreePhotosBank free stock photo gallery grants visitors with non-exclusive, non-transferable license to use these photographic images on the terms of its agreement.

Search or browse categories to find photos or check out the newest or random photos that appear on the home page. Click on Hot List to see the most popular photos as well as photos with the highest rating, most views and most downloads. Some photos have an added digital effect so you'll find a diversity of photos you might not otherwise find on other photo sites.

Each photo comes with info regarding its size, number of views, downloads, rating, and photographer's information. You can also email the photo to a friend or print it. You can download the image in its original jpg file or as a zipped file. You'll find a quality collection with hundreds of photos.

45) Ixuz Travel.net
http://www.ixuz.com/

Travel the world in pajamas with Ixuz Travel, which is dedicated to collecting photos from around the world. The site has a Korean version of its pages. Currently, the collection has over 2700 pictures sorted in 85 albums and 18 categories.

Select a country to explore and these pages show places for that country or continent along with the last updated albums, last additions, last comments, most viewed, top rated and random images. Each image page includes details such as who uploaded it, album name, ratings and so on. The menu on top of the image lets you send an ecard with the photo or browse the album by going forward or backward.

Membership is required to send ecards and saving images into your favorites. The site also has a community through its forums, private messages and travel stories. Its wiki tour guides provide background information on various countries. Click Top 10 from the left menu to see the top items for most read stories, most commented stories, polls and most downloaded files. After you browse this site, you feel like you've gone on an adventure.

44) freedigitalphotos.net
http://freedigitalphotos.net/

Freedigitalphotos.net has over 2000 free images for use in commercial and non-commercial work so long as you don't claim the works as your own, redistribute them or offer them for sale.

Browse photos by category or use the search tool. Each category has sub-categories, which could have sub-categories of their own. The sub-category thumbnails display the title and the number of times viewed. Click the thumbnail to see a larger view. If you want the image, right-click on the image and save it.

The home page displays a random image. You can refresh it to change the image. It's an easy to use site with a good collection.