Why would Twitter have deprecated the use of DELETE as a request method?

@jamesbeith James Beith

Twitter has deprecated the use of all methods that use DELETE as a request method,
e.g. DELETE :user/lists/:id
And now instead uses POST as the request method,
e.g. POST lists/destroy

Why has Twitter have stopped using DELETE in their API altogether, and now only use POST and GET for all methods?

Is it performance?
Is it security?
What are the advantages of building an API that only uses POST and GET?

Many thanks,

2 years 14 weeks ago