In the short run whatever airtel is doing is sustainable but in the long run i have my doubts. Look at what happened to them in India, it went to an extent where the profit margins were so low that they had to meet with reliance to iron out issues within the industry...

@Bettertry - Airtel are already in full kamikaze deadly assault mode, so the fatality level is high in the name of breaking the monopoly. If biz was religion their sacrifice would be rewarded, but it doesn't work that way in the corporate game. They need to read more on 'the art of war'. You don't kill a great army through direct attack when inferior, you infiltrate it and kill it from within. They can start by getting back Claire Ruto.
In the meantime the 1/- promo has received numb response from the other 3 telcos, worrying to airtel and too bad for me coz I wont get safcom shares below 4/- as i had anticipated a panic sell bout. This 4-4.40 range has solid support since late 2009 especially foreigners.