Re: Using API for special URLs in relation to JS page tracking dublicates visits on some browsers.

> setUrlReferrer() function doesn't do anything, at least to what it appears, either setting it or not everything is shown as 'Direct Entry'.

See [piwik.org]

> I found no source that has even the basic information about where the VisitorId is stored, where to look for it.

See [piwik.org]