Amit,
Though I am not leaving AdSense, but would like to try some other alternatives. So, I would appreciate if you clarify these doubts:-
1) Can I use Tyroo & Chitika along with AdSense?
Chitika site says they are compatible with AdSense and Google has given green signal. Tyroo officials said it is also compatible.
2) I can use them on the same page displaying AdSense contextual ads or they should be mutually exclusive?
3) Will it be better to use them as alternate url ads i.e when Google ads cannot be shown?
4) Any other alternate that you would like to recommend that does not require large number of visitors/pageviews?
thanks,