Information from tornado surveys is initially published by the National Weather Service. Other information outlets such as wikipedia can then use that information. You can see the original NWS text in many instances by following the citations given on Wikipedia.
Neither copied the other. Both sites are based on the wiki concept, meaning that anyone can contribute to the content on the sites. There are lots of wiki websites on the internet.
Yes. Wikipedia is an example of a wiki, a site that can be edited by its users.
I like wiki answer
No, Wikipedia is a wiki.
There are many Wiki websites in the world and on the web. Results show that 32% of all websites have some kind of wiki program and/or wiki website added to it.
No. A 'wiki' is any site that uses the wiki system of public creation and editing. Wikipedia is most well known site that uses this system, but that does not mean any site with 'wiki' in, is in any way related to the Wikipedia.
Longest Wiki Besides WikipediaI believe the longest wiki created besides Wikipedia would have to be our own WikiAnswers.
One does not register for academic jobs with Wiki. Wiki is short for Wikipedia the public online encyclopedia. There are no jobs to offer from Wikipedia.
The internet is all linked together. So it isn't a surprise when you get answer from one site while you looking on a completely different site.
Wikipedia
Wikipedia is a wiki because the underlying software (Mediawiki) has the features commonly associated with a wiki site. The word wiki comes from Hawaiian for quick and a wiki site allows the content to quickly change since anyone can edit it.
Wikipedia has an excellent overview of all of the career sites on the internet. This article is availble here: http://en.wikipedia.org/wiki/Category:Job_search_engines.