::: Okay first on the sources, I am not a scholar myself. I'm a Buddhist practitioner who has heard many teachings on the subject but not studied the sutras. But you can check out the Karma in Buddhism article which goes into all these points in detail. For instance Karma_in_Buddhism#Characteristics.  

 ::: Does that answer your question about sources? These points are common to all the Buddhist schools and covered in the sutras - but a Buddhist scholar would be best to give the sources for them if you want more details. 

 ::: Yes my comments are focused on Karma in Buddhism because that's the only form of Karma I know about.  

 ::: Yes - I know there is a great deal of discussion of these topics. For sure it would be good to have a discussion section here. I have no problem with it discussing and criticizing these ideas. The issue is with it calling these ideas Buddhist without any sources to back up the claim that they are Buddhist ideas - and within a framework of non Buddhist concepts.  

 ::: It would be good to have a proper informed discussion of karma and comparison of the different ways it is understood in different traditions and problems with it. But this isn't it.  

 ::: Indeed if you check the sources given for many of the comments here - they come from a series of articles whose authors - as best I can tell (they are rather technical theological articles) - are looking at the possiblity of applying the Eastern idea of karma to give an explanation of why a just and good God can permit a world with evil and suffering in it. The article I read didn't claim to be an overview of Eastern ideas of karma - but rather an application of them to theology. That's why it is imbued throughout with ideas from Western theology that do not fit well with Eastern ideas. 

 ::: So - if this material is included -it needs to be made clear where it comes from and what the discussion is - and given its proper context, and because the sources are articles by Western Christian theologians - at least the ones I followed up - that is another reason why it belongs in the Western section. 

 I hope that is clear, but sorry I am only a Buddhist practitioner and not a scholar and can't write such a section myself. 

 ::: Perhaps others can step in here?