I see it chat rooms all the time and I have no clue what it means.
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2015-03-08T07:23:49.870
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2015-03-08T22:46:01.797
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usage
What do people mean when they just type こん？
Should mean こんにちは (Good day) or depending on the time こんばんわ (Good evening).
Same as おは for おはよう :)
CC BY-SA 3.0
2015-03-08T08:05:12.697
23124
2015-03-08T22:46:01.797
2015-03-08T22:46:01.797
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answer