I had the same question and asked the support. They are fantastic, polite and ever so quick - if you have any queries, questions, doubts, just aks them. There is a"contact us" form easy to find on the site. I honestly don't remember waiting for an answer for more than a day and I had a lot of question when I first started - and sometimes still do! :-)
These are all optional extended licenses. If you want to see what type if usages they allow, you can read the extended license terms link here. We recommend all members to enable these licenses as they sell for much more than the standard Royalty Free. Plus there are buyers requesting these licenses so it is better to have then available.
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