(in answer to comments in thread http://www.reddit.com/r/MachineLearning/comments/1ez6cq/its_been_just_over_a_year_since_it_was_launched/ querying the Kaggle wiki content terms)
A downside of writing our own wiki software is that we geeked out on the code and missed including standard content license terms. In the absence of specific terms, everyone who has contributed content to the Kaggle wiki (www.kaggle.com/wiki) continues to own their contributions - as it should be. Kaggle does NOT claim ownership of any user-created content on the wiki.
To make it clear that the wiki content is a free shared community resource for everyone to build on and use, we'll be adding a Creative Commons Attribution-ShareAlike 3.0 license to all wiki content going forward (same as Wikipedia - http://creativecommons.org/licenses/by-sa/3.0/). Before we can properly do that, we'll need to migrate all existing content to that license by getting permission from past contributors - more than 80 people right now. So it's a process, but we're glad you picked up on it before that number got bigger!
We hope anyone who had concerns about IP on the wiki is now 100% comfortable contributing and making it a useful hub for everyone interested in ML.
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