like I said in the release thread, that was fast...but after 3 days of tests, i can say, for sure, that it's absolutely NOT working 
I have of course unchecked the "Auto detect and add search provider", and after some browsing in Amazon and FNAC, their respective search engines were added to the list !
I had the idea to check this in real time, as I wrote this message, you can test yourself :
please, kill that "feature" or at least show only "trusted" and authorized search engines (not the "others" search engines) in the right-click menu.
I have of course unchecked the "Auto detect and add search provider", and after some browsing in Amazon and FNAC, their respective search engines were added to the list !
I had the idea to check this in real time, as I wrote this message, you can test yourself :
- Uncheck the "Auto detect and add search provider" option in Parameters
- Remove all those crappy search engines that were added automatically, without user's permission (chromium, stop with that bullsh*t please, this is NOT A GOOD FEATURE)
- Go to gonintendo.com and try to search, for example, "mario" in its search engine (up right in the website)
- Return to the parameters, chromium bulsh*t's magic happened : you have a new crappy search engine without user's permission
please, kill that "feature" or at least show only "trusted" and authorized search engines (not the "others" search engines) in the right-click menu.