Chris,

Le 28 janv. 2015 à 06:19, Chris Peterson <cpeter...@mozilla.com> a écrit :
> I have used Nightly without any User-Agent header (using the "Modify Headers" 
> add-on) for about a month. I have not found any major problems, but I'm sure 
> they exist. :)

I have used for a while the "User-Agent: FuckYeah/1.0" header for the same 
reasons. It breaks thing on the desktop time to time, but do not make the Web 
that unusable. The issue on the other hand becomes a lot stronger on mobile. 
Most of the time you will receive the desktop site instead of the mobile site. 
And most of the time, People are sending a content/CSS/JS which is tailored for 
a specific rendering engine. Some Google properties for example do that and 
basically you never receive the tier1 if you have the wrong UA. Sometimes you 
will just be blocked.


Another issue you will encounter is that the Web is a legacy content factory. 
Sites disappear a lot (unfortunately), but there is a mass of them which never 
gets updated including their bugs or bad habits. Some sites will not work 
without a proper UA. The unfortunate issue is that most people don't think the 
site is badly implemented, they think the browser is crap because it is not 
working. 


-- 
Karl Dubost, Mozilla
http://www.la-grange.net/karl/moz

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