But if the "bling" component is what you are looking for, this is the best you can find.
I had some problems when entering a new response to a poll, but by using his forum the developer fixed it for me. Good service.
I can recomend the extenstion.
Because off the permission system, most maintenance can be done in the frontend.
This comonent is one of more RSjoomla components. You can see that the style and "maturity" of RSfeedback is not yet on the same level as other RS components. But the support is very good and quickly, requested adjustment instructions were very correct.