How many people read feeds from RSS readers and from which ones?

Question

Habr

Partial answer:
Here's how many: metrika.yandex.ru/stat/entrance/?counter_id=218081... (dates - July 17-18, 2013).
Screenshot for current state: img17.imageshack.us/img17/9201/daqx.png
The poll is correct for an article that didn't make it to the front page - ie. it didn't appear in hacks and tops, so many people didn't read it.
It will be interesting to compare with a similar survey, but for an article that quickly appeared on the main page and, preferably, in the tops.