If you want to make many sales and profit and you have plenty of time to dedicate, you may prefer to stay not exclusive to Dreamstime, however if you want to enjoy the benefits of exclusivity with Dreamstime and you are not doing this as a full time job, then you may prefer to stay exclusive with DT, however, before you may apply for exclusivity you need to have approved at least 50 images as Davidwatmough already points out.
Interact, make friends, share tips and techniques, have fun. Dreamstime wants your ideas and thoughts whether you are a photographer, designer or regular user. Create a blog to tell your story, promote favorite images and photographers, post tutorials or simply exchange opinions with your with fellow dreamstimers.
Don't forget words and pictures go great together so make sure you choose some Dreamstime favorite pics to brighten your article. For inspiration, check out the hottest or the most useful blogs on the left.
Create a blog to tell your story, promote favorite stock images and photographers