I have started an app for this that is really just a proof of concept at this point.
The data is not available in HTML format because it's a data dump. That means it's data, not rendered pages. HTML would only really be useful for viewing, and even then it would be of limited usefulness as mush of the site would be missing.
What data are you looking for specifically? Have you tried opening the XML files in a capable browser like Chrome?
Perhaps if enough people were interested someone could build an app which allows one to browse a data dump.
EDIT: Maybe I am wrong, please stand by...
OK. I looked at the data dump. I didn't realize that post body was inside an XML attribute. This does make the posts far less readable.
If the body was actually the content of the
<post> key then these would be more usable. I wonder what could be done about that...
UPDATE: Here is some slightly less terrible, awful ruby code which does work somewhat for converting the XML to HTML. This needs a lot of work to be useful!
You can view / download the code from my website. (View source, my web server isn't serving the proper mime type). To use, run it in a terminal and pass the path of a data dump folder. The script will output HTML to the console:
[jnet@Kyle Scratch]$ ./soDumpMe.rb ~/Downloads/012012\ Sexuality/012012\ Sexuality > "012012 Sexuality.html"
The HTML that is produced groups Questions with their Answers and shows scores. Nothing more... yet.