Trying to understand the logic here.
The question was closed since November 2011.
Based on how Stack Overflow is set up and from answers I got at Average time remaining until deletion after closure for a popular question, if a question is closed, it's on its way to the deletion until contested. So why are we contesting the deletion of the question?
I strongly disagree that a closed question tells a normal user that questions like that are not encouraged because a normal user (the one in majority) never listens and never reads the FAQ. Anyone actively watching meta.stackoverflow.com is by no means a normal user.
So, why was the question deleted? Members of the community including a moderator decided that it should be removed as a sign post to other question as an off-topic example.
It is also flawed logic to say because a question is popular and highly up-voted that it is useful (in this case it is useful) and on-topic, so again you are battling the wrong action.
Disadvantages to deletion are currently
- Many Apple developers who have not seen this question yet lose out
- Links are broken across the internet
For the first point, this is something that is unfortunate yet at the same time completely avoidable
user contributions licensed under cc-wiki with attribution required
I have grabbed the content (currently the highest voted answer by Craig Hockenberry) and placed it at
http://blog.philippeharewood.com/wolfrevokcats/how-much-does-it-cost-to-develop-an-iphone-application.html
It's actually a github repo: https://github.com/phwd/wolfrevokcats/tree/gh-pages so anyone can send a request if they so please.
So lost value has been now restored (even though many other sites out there do the same time, just not in a nicely readable format)
I have slowly been grabbing other popular off-topic questions that have been deleted and placing it there. Like pekka I am hoping to redirect the repo to http://wolfrevokcats.com. The point I am getting at here is the internet in this age is quick to recover lost archives and it doesn't need to be in one location only.
With regards to the second point, I would refer back to the internet being like a starfish, able to regenerate lost parts on the spot. The owners of sites with broken links can easily fix it to somewhere else or even use the cc-wiki license to keep it on their site.
tldr; The question was deleted because no one maintained it, nor flagged all the horrible answers (before a mod stepped in today) nor curated it. It is only when it gets deleted do people do something. Also, there is a way to preserve content but a lot of people are too lazy to take initiative to do that.
</yawn>