If you ask me... for the budget under P18,000... I would get the following:

Acer Aspire One... Intel® Atom™ N270 8.9in. 1Gb 120Gb lan wifi 0.3MP cam, six cell battery (5,200mAh) ---- PhP 16,995.00

Although it lacks bluetooth, it has two SD card slots, wifi b/g, 3 usb ports. The 8.9" LCD screen is very sharp & colors are crisp (great for watching videos) but tends to glare because it's surface is smooth. Expect battery life to be around 4 to 5 hours with the six cell pack under normal use.

Its a good value for money netbook with a lot of following here and overseas.