I signed up for a Photoshop.com account in 2010 and never actually used it. I did decide to subscribe to Creative Cloud last year and will be continuing that subscription. I assume that Revel is not going to do much for me since I don't use the Cloud to share photos with others.
The creative cloud is our professional offering, with all the professional programs and also cloud storage. Revel is part of our consumer offering...along with Elements, Premiere Elements, etc. Revel cloud is separate from the Creative cloud. If you wanted to have a place to share photo albums with friends and relatives by sending a link for them to view, or you want to have these albums available to view on multiple devices without allocating storage on each, then Revel is a good option.