Exhibit 1

to Schedule 13D

JOINT FILING AGREEMENT

PURSUANT TO RULE 13d-1(k)(1)

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint acquisition statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the completeness and accuracy of the information concerning the other entities or persons, except to the extent that it knows or has reason to believe that such information is accurate.

Dated: January 14, 2011.

GENERAL ATLANTIC LLC
By:	/s/ Christopher G. Lanning
	Name: Christopher G. Lanning
	Title:   Managing Director

GENERAL ATLANTIC GENPAR (MAURITIUS) LIMITED
By:	/s/ Christopher G. Lanning
	Name: Christopher G. Lanning
	Title:   Director

 

GENERAL ATLANTIC MAURITIUS LIMITED
By:	/s/ Christopher G. Lanning
	Name: Christopher G. Lanning
	Title:   Director