If you do not wish ... , please uncheck ...

I always spend a little more time to understand such a phrase:

Neither in English, nor in my national language, nor in my mother tongue.

I would first tried to remove the first negation:

or the second:

Or both:

But these still confused me. Finally, in a rare bright moment, it suddenly makes sense to me:

But the next time I read the same line, I got into the same problem again.

So my vote is: yes, always.

Does anyone have the same problem?

 

if you do not wish is the american english grammar. so basically it is if you don't want something do not check the box or uncheck the box and you will not receive any further messages about said product.

 

Did not know that. Thanks for the info. Liked it.

You got me into another problem here
My problem is with double negation, in any languages, even my own. Can't remember since when.

 

A double negation is rarely advisable, regardless of language, as it often is ambigous, and easy to misunderstand - especially if the sentence is more complicated. Usually a reverse sentence would be better - ie something like "If you wish to receive updates, check the box and click submit" (of course this would mean the box start out unchecked). It's easier and quicker to understand.
Personally I don't really have a problem with double negation, I understand it just fine, but then I read legal papers for "fun"...

 

I dont' see how fun it is

But then, probably I would have to start the same thing and see if there's something fun about them. Surely there would be no caricature figures in it, oh well ..

 

too funny I say the same thing

 

Who does those negations? If I come to a site and it has the things you're pointing out there, I'd probably think that it's been designed by a non-English speaking folks.

Usually it goes something like this. In the first case (No, Thanks) they check the box because they do not want to receive / sign up / be part of something, etc. In the second case (Receive Our Newsletter) they uncheck the box because they do not want to receive / sign up / be part of something, etc.

 

Well, the OP's phrase was perfectly good English, however a bit "over the top" and overly complicated. While I doubt there are many sites using such archaic sentence-constructions, I don't doubt there are some out there.

 

I am not sure. I had subscribed to too many newsletter and had been long wanted to get rid of them, instead of filtered there into folders. I did not managed to get the time until last week, when I clicked those unsubscription links within each of those emails. Many of these sites had fancy or terrible interface to handle users unsubscription, but there is only one which uses double negation. So, if this is their method to gain interest, yes they are successful here.