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I saw the following in a question page on Stack Overflow:

Which has compression artifact as seen when zooming:

Could this be changed? It doesn't look too good.

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closed as too localized by Aaron Bertrand, yoozer8, Hugo Dozois, tombull89, ChrisF May 20 '13 at 21:02

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

What are you talking about? What question? What's wrong exactly? – Shadow Wizard May 20 '13 at 10:51
@ShaWizDowArd can you not see the compression artifacts around the text and images? It typically happens when a picture is saved as a .jpeg instead of a web-suited format such as .png. – tombull89 May 20 '13 at 10:53
This would never have happened with a GIF. – Dan May 20 '13 at 10:56
So, this is someone's uploaded image? Or not? That is, why is this an SE bug? – Oded May 20 '13 at 11:00
@Oded Looks like a banner advert to me – Dan May 20 '13 at 11:00
@Dan - Possibly. That's why I am asking. If it is, it was not supplied by Stack Exchange, but by adzerk. – Oded May 20 '13 at 11:01
@Oded, it's a banner ad, yes. I was under the impression community ads were only shown at the side, and top-bar and inter-question ads were for non-community ads. – tombull89 May 20 '13 at 11:02
If it is served by Adzerk, apologies. – tombull89 May 20 '13 at 11:02
Banner ads are not community ads - and they are not created by Stack Exchange - definitely not a Windows 8 banner. – Oded May 20 '13 at 11:05
@tombull89 actually not, that specific ad is served by which is incorporated with Microsoft. (see the footer: Copyright © 2013 Microsoft, Inc.) – Shadow Wizard May 20 '13 at 11:05
You're worried about the compression quality of images in an advertisement? Seriously? – Aaron Bertrand May 20 '13 at 17:27
@AaronBertrand, yes. It doesn't look professional. – tombull89 May 20 '13 at 17:35
No banner ads ever look professional. But in any case, these aren't StackOverflow's images in the first place. Besides, most of us don't see any ads on the network at all. – Aaron Bertrand May 20 '13 at 17:37
@AaronBertrand, granted, when I posted this question I didn't know that the ads were "farmed out" through Adzerk, I thought there was some quality control done at SE's end. – tombull89 May 20 '13 at 17:39
Regardless of where the ads come from, they're still ads. So who cares? – Aaron Bertrand May 20 '13 at 17:39
up vote 9 down vote accepted

That's an advertisement served to users with less than 200 reputation in questions tagged as .

The original image used is indeed .jpg:

This image is not under Stack Exchange responsibility, they just sold advertisement space to other company (Microsoft in this case) and that other company is responsible for the image and the ad contents.

This can't be changed by us, but you can "downvote" the ad so it won't show again:

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