JOINT FILING AGREEMENT PURSUANT TO RULE 13D-1(k)(1)

EXHIBIT 99.1

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 he, she or it knows or has reason to believe that such information is accurate. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: October 13, 0000

	XXXXXXX XXXXXXXX XXXXXXXXX FUND PTE. LTD.
	By:	/s/ Xxx Xx Xxxx
		Name:	Xxx Xx Xxxx
		Title:	Director
	GENERAL ATLANTIC SINGAPORE INTERHOLDCO LTD.
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Director
	GENERAL ATLANTIC PARTNERS (BERMUDA) III, L.P.
	By:	General Atlantic GenPar (Bermuda), L.P., its General Partner
	By:	GAP (Bermuda) L.P., its General Partner
	By:	GAP (Bermuda) GP LIMITED, its General Partner
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director
	GENERAL ATLANTIC PARTNERS (BERMUDA) IV, L.P.
	By:	General Atlantic GenPar (Bermuda), L.P., its General Partner
	By:	GAP (Bermuda) L.P., its General Partner
	By:	GAP (Bermuda) GP LIMITED, its General Partner
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director

	GENERAL ATLANTIC GENPAR (BERMUDA), L.P.
	By:	GAP (Bermuda) L.P., its General Partner
	By:	GAP (Bermuda) GP LIMITED, its General Partner
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director
	GAP (BERMUDA) L.P.
	By:	GAP (BERMUDA) GP LIMITED, its General Partner
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director
	GENERAL ATLANTIC, L.P.
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director
	GAP COINVESTMENTS III, LLC
	By:	General Atlantic, L.P., its Managing Member
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director
	GAP COINVESTMENTS IV, LLC
	By:	General Atlantic, L.P., its Managing Member
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director

2

	GAP COINVESTMENTS V, LLC
	By:	General Atlantic, L.P., its Managing Member
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director
	GAP COINVESTMENTS CDA, L.P.
	By:	General Atlantic, L.P., its General Partner
	By:	/s/ Xxxxxxx Xxxx
		Name:	Xxxxxxx Xxxx
		Title:	Managing Director

3