Dreamstime offers an editorial license in addition to their other licenses:

Dreamstime offers four extended licenses which could increase your earnings significantly: Increase Max Copies, Web Usage, Print Usage, and Sell the Rights. Each of these extends the ways in which the image can be used and pays a much higher premium. If you sell the rights to the image, you no longer control it and cannot sell it elsewhere, so use it with caution--noting that you can make a large chunk of change using this option (you can set your own price). Further details are below.

Sell Your Digital Images: Dreamstime pays $0.50 to $1.00 per basic download to the photographer (50%) and has a pretty good upload system. 

Buy Digital Images:
Dreamstime charges more for photos that have been download 100 times or
more, and again if they’ve been downloaded 500 times or more. They have also recently implemented a system where print and web images are separate purchases. You can currently download images for less than $1.

A number of microstock sites offer free downloads as a way to give you a taste of the types of images and image quality they offer. It's not a bad idea for designers on a budget to peruse these offerings now and then. Most notably, Dreamstime has a rotating selection of seven images available for free download at any time. Log in to the main page and look for the "More Free Photos" link to see all seven.

Buy a subscription package at Shutterstock and you can download to your heart's content (currently 750 images per month for a basic package). This means you can download images you are not even sure you need yet and build a personal library of images for the future.

Listed below are some of my popular and recent images.

Click here to buy images at Shutterstock.