A few comments and observations:
1) please use only white backgrounds -- this best fits our applications
2) We are trying to convey in the logo and graphic image connectivity of circles. This is the core nature of our work. The circles we run have a great variety - learning circles, peacemaking circles, working circles, healing circles.
3) graphic images of concentric circles, circles that look like tunnels, circles that are completely symmetrical (all the same size, equally spaced are LESS interesting to us.
4) We like seeing two samples one that incorporates and connects the text and the graphic together; the other keeping them separate.
Thanks again for all your creativity -- we have spent many hours and have looked at and talked about every submission!