When I do a search on Amazon France, one of the URL parameters is M, as in the URL below:https://www.amazon.fr/s/ref=nb_sb_noss/256-9830746-1362835?__mk_fr_FR=M&url=search-alias%3Daps&field-keywords=WebcamAny idea why they have this strange parameter there? 
Why is Amazon written with strange characters in this URL?
amazon;url
Using special characters is a method to tell the browser to use UTF8 encoding, and this probably is Amazon engineers putting in a bit of an easteregg instead of a dull utf8= thing.For the record, all non-English versions have an __mk_{languagecode}_{countrycode} as URL parameter, the only one I found to differ from the M thing is the Japanese version, which uses .  is Katakana spelled in Katakana.