Rated 3 out of 5 stars
Interesting idea to have a statusbar button to activate formatting of JSON sent without the proper content type header, this addresses a situation which my addon doesn't yet. I note that it actually doesn't work properly in Firefox 3.5 or 3.6, so marking it compatible with 0.3 might be optimistic - other than that it seems to do what it promises.
May I point out that I have not given permission for my authorship or license boilerplate to be removed from json2html.js which I originally wrote in December 2010 for JSONovich (see http://code.google.com/p/jsonovich/source/browse/trunk/modules/json2html.js?r=52 for details). I'd appreciate if this was kindly reinstated in the next release, thank you.