, L.P. do JP Morgan Investment Management, Inc. 270 Park Avenue, 25'h Floor New York, New York 10017 Attn: Evrard J. Fraise Jarrod R. Fong 522 Fifth Avenue Fund, L.P. do JP Morgan Investment Management, Inc. 270 Park Avenue, 25'h Floor New York, New York 10017 Attn: Evrard J. Fraise Jarrod R. Fong KPCB

999.78 c/o JP Morgan Investment Management, Inc. 270 Park Avenue, 25th Floor New York, New York 10017 Attn: Evrard J. Fraise Jarrod R. Fong 522 Fifth Avenue Fund, L.P. 69,530 $499,999.27 c/o JP Morgan Investment Management, Inc. 270 Park Avenue, 25ih Floor New York, New York 10017 Attn: Evrard J. Fraise

rowitz Fund II, L.P. or its affiliates on or before March 21, 2011, (c) any Common Stock purchased by J.P. Morgan Digital Growth Fund, L.P. and 522 Fifth Avenue Fund, L.P. or their affiliates on or before December 31, 2011, (d) any Common Stock purchased by KPCB Holdings, Inc. pursuant to that certain Warrant to

, L.P. do JP Morgan Investment Management, Inc. 270 Park Avenue, 25th Floor New York, New York 10017 Attn: Evrard J. Fraise Jarrod R. Fong 522 Fifth Avenue Fund, L.P. do JP Morgan Investment Management, Inc. 270 Park Avenue, 25th Floor New York, New York 10017 Attn: Evrard J. Fraise Jarrod R. Fong KPCB