I just happened to notice that on Newsvine's parent company site MSNBC, that it says that it will show your email when you post a comment. It specifically says "Optional, Will be published" and the remember me says " we'll keep it private". My gripe in this is that in most cases you need to provide an email "TO" be remembered.
It just seems wrong to require your email be published to have the actual site remember you.
There's my opinion. Feel free to check it out and we'll see if I'm understanding the comment fields.