can I back-up pictures from Element 11 to name.photoshop.com?
Not directly, no. You can log into photoshop.com with a web browser and do it that way, but there is no longer any tie-in from PSE to photoshop.com. In PSE 11, adobe is pushing its Revel subscription service instead.
thanks for your reply. question with Revel subscription. I bought some extra space on photoshop.com
can this be used by Revel? or do I lose this and have to start a subscription with Revel?
No, revel is a totally different product, and so far the windows version isn't available yet.
You can use the web version from link http://www.adoberevel.com/
You can create albums/carousels, upload photos. Try the trail and check if it helps you.