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Check your Add-ons Manager and the computers Programs Folder. Do you have Yahoo anything?

As far as I know, websites are not able to interrogate your default search engine -- or change what it currently is -- without installing an add-on.

Next time you see that message, could you post the address of the page where it appears?

Here is a screen shot; the problem occurs in Yahoo Mail:

https://us-mg6.mail.yahoo.com/neo/launch?.rand=9echibfvf1oua#6426

That is just Yahoo asking if you want to set itself as the default. It would show the same message if Firefox had Yahoo as the default. It isn't able to know what search engine you are using, it just wants you to use Yahoo. It's the same with Google's recent foray into encouraging Firefox users to use Google.

Tyler Downer said

That is just Yahoo asking if you want to set itself as the default. It would show the same message if Firefox had Yahoo as the default. It isn't able to know what search engine you are using, it just wants you to use Yahoo. It's the same with Google's recent foray into encouraging Firefox users to use Google.

Well, then I amend my question to suggest that Mozilla prohibit the use of its trademark in such an intrusive manner.

Why? Yahoo and Mozilla have a five year contract that states that Yahoo is the preferred search engine for Firefox, so this isn't a lie. You can of course use Amy search engine you want but Yahoo isn't doing anything wrong here

Tyler Downer said

Why? Yahoo and Mozilla have a five year contract that states that Yahoo is the preferred search engine for Firefox, so this isn't a lie. You can of course use Amy search engine you want but Yahoo isn't doing anything wrong here

Firefox has a duty to protect its brand and reputation. Firefox advertizes itself as clean, fast and customizable. It is not truly "customizable" if I am harassed for not using the "preferred search engine."

Yahoo's ad is clunky and disruptive, wasting screen space with an ad the size of toolbar, but that cannot be made to go away permanently no matter how many times I press the "X". Perhaps this says a lot about Yahoo, but Firefox's acceptance of this behavior reflects poorly on its brand as well.

If sponsors cannot be trusted to use the Firefox logo in a manner that does not interrupts the browser's users, then Firefox must specify in its sponsorship contracts how its name and logo may be used.

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