amazonurl
When I do a search on Amazon France, one of the URL parameters is "ÅMÅŽÕÑ", as in the URL below:
https://www.amazon.fr/s/ref=nb_sb_noss/256-9830746-1362835?__mk_fr_FR=ÅMÅŽÕÑ&url=search-alias%3Daps&field-keywords=Webcam
Any idea why they have this strange parameter there?
Problem solved, no thanks to the canned response I got from Amazon.
I had to create a new Amazon.com account (rather than a new Amazon Payments account, as the canned response told me to), then use that to sign into Amazon Payments.
Amazon changed layout a bit. The Search Option still there and got expanded. 
At the end of the summary for reviews section, click on the blue number that has how many reviews a product has. Then, scroll down to the bottom of the first list of reviews they give you and click "see all (# of reviews)". The search button is on the left.
Best Answer
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 ÅMÅŽÕÑ thing is the Japanese version, which uses カタカナ. カタカナ is Katakana spelled in Katakana.