Info below credits to Inquirer.net
Here’s how to help Typhoon Ondoy (Ketsana) victims.

Rescue Operations

National Disaster Coordinating Council (NDCC) (+632-9125668, +632-9111406, +632-9115061, +632-9122665) Help hotlines: (+65 734-2118, 734-2120) ndcchelpdesk@gmail.com
Philippine Coast Guard (+632-5276136)
Air Force (+63908-1126976, +632-8535023)
Metro Manila Development Authority (136)
Marikina City Rescue (+632-6462436, +632-6462423, +632920-9072902) Pasig Rescue Emergency Number (+632-6310099)
Quezon City Rescue (161)
San Juan City Hall Command Post (+632-4681697)
Bureau of Fire Protection Region III (Central Luzon) Hotline: (+63245-9634376)
Senator Dick Gordon (+639178997898, +63938-444BOYS, +632-9342118, +632-4338528)
Senator Manny Villar (+639174226800. +639172414864, +639276751981)
Philippine National Red Cross (143, +632-5270000)
Philippine National Red Cross Rizal Chapter operations center hotline: (+632-6350922, +632-6347824)

Rubber boat and chopper requests

NCRPO (+632-8383203, +632-8383354)
Private citizens who would like to lend their motor boats for rescue please call emergency nos: +632-9125668, +632-9111406, +632-9122665, +632-9115061)
You can also text (+632917-4226800 or +632927-6751981) for rescue dump trucks.
For those who are able to lend 4×4 trucks for rescue: Please send truck to Greenhills Shopping Center Unimart Grocery to await deployment, Tel No. (+632920-9072902).
Petron & San Miguel Corporation are lending choppers for rescue operations, call/text: (+632917-8140655) ask for Lydia Ragasa

Power supply concerns

Meralco (+63917-5592824, 16211, +63920-9292824) If you want service cut off to your area to prevent fires and electrocution.

Donations of heavy duty flashlights needed for rescue operations in Cainta, Rizal area. Contact Cielo at (+632918-8824356)

E-Donations

SMS: text RED to 2899 (Globe) and 4483 (Smart)
G-Cash: text DONATEAMOUNT4-digit M-PINREDCROSS to 2882
TXTPOWER.org: Paypal, Smart Money (5577-5144-1866-7103), G-Cash (0917-9751092)

Cellphone services

FINDERSERVICE. For Smart, text wis to 386.
FINDERSERVICE. For Globe, text find to 7000.