Have noticed several ambush campaigns around the year 2011.
1) The very popular McDowell’s v/s Royal Stag, the Harbhajan Singh controversy.
2) There were two close competitors Tata Sky v/s Dish TV with opposing messages. “To ask questions or not to ask.”
3) Then there were two more competitors from the press media, TOI v/s HT.
4) And then a few not so close competitors, Iphone v/s Micromax & Karbonn.