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Apple has seemingly found a way to block Android’s new iMessage app
(www.theverge.com)
This is a most excellent place for technology news and articles.
Back in 1999 MSN messenger had support for chatting with AIM users, it was quickly blocked by AOL and for a while there was a game of cat and mouse between Microsoft and AOL until Microsoft quietly dropped the feature
https://archive.ph/20120526215641/http://www.news.com/2100-1023-228960.html