It appears that the Sponsors could be from the world at large, not just Entrecard bloggers/members.
This is a copy of the email I received today from Entrecard:
We are pleased that many members are taking advantage of Entrecard services and that Entrecard is able to help users increase traffic to their blog. However in order to continue providing this free service, we will be taking 15% of our entire ad network inventory for sponsors as of Sept. 28, 09. This is a standard business model used by free advertising networks. The revenues generated by our sponsors will help cover overhead expenses and keep our service free to all our members for years to come. To keep things simple and fair, all ads will be distributed evenly in our network. We are currently working on a feature that will allow users to disable sponsor ads that may conflict with their blog. This will be available in a few weeks.
Please be assured that we will screen all sponsor ads to ensure that they meet our guidelines. All sponsor ads WILL be family oriented, and will not promote nudity, violence or anything illegal.
We thank you for your support and understanding. We will continue to make improvements to our network. Our goal is to deliver more traffic to your blog, increase your readers and comments, and let you network with other bloggers. We will focus on fine tuning every aspect of our business to ensure that our users are happy in the years ahead.
Would love to hear from other Entrecard members concerning this change and further information you may have regarding this change.
I have really enjoyed being a member and visiting all the wonderful blogs and dropping and having them drop on my Entrecard and visit my blog but I am not sure if I am going to like this new direction Entrecard needs to go.
Let me know what you think, just leave a comment.