This is a new browser designed by Microsoft & Mozilla for all the lovers of the Mozilla branded web browsers.
CAVEAT: There is NO Spyware, Adware, Malicious Code, Sexual/Ilicit Content or anything else that might not be suitable in a work or child environment on this site.
There is however MUCH fun to be had reading the various pages. To say any more would ruin the fun.
Apologies for being so vague, but that was part of the appeal ;)