Web based survey

I want to run a survey about Gwenview. I have been googling for some web based surveys for a while, but it would be even better if I could get some real experiences.

Here is my feature list:

• Support for multiple questions
• A simple admin page to analyse the result (I don't need fancy graphes, but won't complain if there are)
• Free or at least not too expensive
• I would prefer it to be self hosted, but I could host it on Gwenview website if requirements are not too odd

So dear lazy web, which survey system would you suggest?