First off, I don't think this can be done, but I'd very much like to be wrong.

We in /r/science would like to track the number of readers who look at our AMAs, we get a lot of requests for the information and right now I have to email the admins and wait for them to get back to me with a number, I can't look at changes over time, or any other handy stats to let us know how people are using our AMAs.

If we could embed a smart pixel via CSS we could gather some data on this, but it appears that all of the images that the subreddit CSS pulls need to be hosted on a reddit server, which would make our tracking pixel just a pixel.

Any thoughts on how to do this or am I stuck continually harassing people to get data?