Rss hits?

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Hey there, im confused!

I am running wordpress for several blogs. They all have a plugin installed called shortstat that gives me a live stats report.

I have a couple of niche blogs, and a couple mishmash blogs.


The niche blogs pick up okay traffic and when i look at shortstat it tells me how many raw, unique and rss hits I have had.
The RSS on the niche blogs always have many hits.
However on my other blogs I am getting hits to the page...but the RSS count always says zero.

Is it because the blog is of no interest? Does the blog suck?

Or would it be the way I have set up the blog or shortstat?

What Is this RSS Hit in reference to? Someone selecting or using my RSS feed?

I am using 'subscribeme' plugins for my feeds Im not sure if this would interfere too much.

Anyone have any Idea?
Will this affect my traffic at all?