But then, couldn't you insert the google analytics javascript snippet within the html that gets loaded/served up from S3? Or did you mean something like piwik? I have to think S3 would not be a block here, as many users of static site generators also use some sort of analytics tool.
There are bits that JS based tooling will miss in terms of a bigger picture... they don't represent your real load when you run a site that is getting hit by a lot of different smaller search bots. Of course, once you're on s3 or a similarly cheap static delivery option (and/or CDN), you may not actually care.
