I like that it is easy to use and can be used with any site or blog without issues. It's not super expensive either so it doesn't break your bank account too much. The only thing about ZigStat would be that you could do more than just track keywords - but this might be an issue if using other services as well since they all have different features. We are able to see what posts get the most views from our readership and we're also seeing which articles people are reading when browsing through our archives of content.
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