Originally Posted by JSWolf
But in ePub 2, there is NO link to get to an HTML ToC.
Actually, that's not true. See section 2.6 of the 2.0.1 spec:
Within the package there may be one guide element, containing one or more reference elements. The guide element identifies fundamental structural components of the publication, to enable Reading Systems to provide convenient access to them.
<reference type="toc" title="Table of Contents"
<reference type="loi" title="List Of Illustrations"
<reference type="other.intro" title="Introduction"
is what Amazon's kindlegen looks for when it wants an HTML TOC. How a particular reader chooses to use the guide element is entirely implementation-dependent, of course.