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Why is Google allowed to remove purchases from our Play Store accounts without telling us?
(www.androidpolice.com)
This is a most excellent place for technology news and articles.
I've just had a look on the Play Store, and they notably don't use the word "buy" anywhere that I can see. The button to "buy" the app is just a button with the price on it, and clicking through that it uses the language of "install".
Can't help but think that that's deliberate.