As the author, I feel it necessary to give this package a 5 star rating in the name of balance and good taste. gomer hump is a meanie who has never given a rating above 2 stars to anything.
But seriously, folks, since the time of writing Archive::ZipToString Archive::Zip has had an addString method added that does pretty much what this package does, so do use that if you like to keep your dependencies down.
Since I first used this module a few years ago it has been much improved: The documentation is much more useful and the ->clean() method makes it clearer as to how to use this module to tidy up HTML and return it to you. There are improvements that could be made, but I do think earlier reviews are not indicative of how much more usable HTML::Tidy has become.