Legal? Yes, because by signing up you agreed to their terms of service. You gave them permission to invade your privacy and allow them to sell your details. Most people don't realize that free comes at a cost.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk