E-commerce blogs and websites

I have long been looking for good blogs and resources on online commerce. Asked questions on the turnover and in the club Ya.ru, but something in any way. People admit that they do not know or know what I know.

And I am surprised that such a broad topic is about online shopping, and there are too few intelligent resources devoted exclusively to this topic! In the meantime, it is necessary to collect information from all over the Runet bit by bit (I cannot read foreign sites, poor knowledge of English)

Habr is the last resort where they can share their findings in this thread.
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Therefore, I ask all habrovchan who are interested in this topic or know interesting resources to unsubscribe in the topic.