I respect the right of Entrecard members to reject advertisements on their blog but I think it is a shame not to display the Entrecard widget on a member's blog. Why would you sign up in the first place if in return you will not even be a proud part of the community.
Entrecard provides great opportunity for everyone.. for their blog to get known... to meet new bloggers and to have more information about many things. It is indeed a great invention and I personally congratulate the creator of this community.
So I will be on the watch... and if you do have noticed members like this please also send me a comment.